CDC Founders: Cray, Norris, Mullaney

Biographical research for blog post on the CDC 1604 (1960). Compiled from secondary sources, Wikipedia, IEEE/ETHW profiles, the Charles Babbage Institute (CBI) oral histories, the John Markoff NYT obituary, the NSA declassified Cray history, and the Memorial Tribute (National Academies). Confidence levels noted where claims diverge between sources.

Seymour Cray

Birth, Childhood, WWII

Seymour Roger Cray was born 28 September 1925 in Chippewa Falls, Wisconsin, a small mill town on the Chippewa River about 100 miles east of the Twin Cities. His father, Seymour R. Cray Sr., was a civil engineer for the city of Chippewa Falls (some popular accounts say “city engineer”; this distinction is small but Markoff’s NYT obituary uses “civil engineer”). His mother Lillian was the daughter of a Methodist minister.

Cray grew up tinkering: he was a high-school amateur radio operator, and built a punched-tape-to-Morse-code translator from scrap parts – popular accounts often cite Erector Set components and put him at age ten or so. He won a high-school science prize for an automatic telegraph machine. He graduated from Chippewa Falls High School in 1943 and was promptly drafted.

His WWII service is genuinely murky in the public record and most secondary sources are vague.

Wikipedia: drafted “as a radio operator,” “saw action in Europe, and then moved to the Pacific theatre where he worked on breaking Japanese naval codes.”
John Markoff’s 1996 NYT obituary: joined the Army in an “infantry communications platoon,” arrived in Europe after D-Day, fought in the Battle of the Bulge, crossed Europe and met the Russians, then was deployed to the Philippines “supporting Filipino guerrilla forces.”
NSA Cryptologic History: brief; cites the codebreaking-related work in the Pacific.

There is no clear primary-source confirmation that Cray was at the Battle of Leyte specifically, nor that he was Army Security Agency rather than Signal Corps. The Markoff version (Bulge in Europe; then Philippines as comms support to guerrillas) is the most detailed. The “Japanese naval codes” framing on Wikipedia may be a retrospective gloss connecting his later ERA codebreaking work with vague Pacific service. Treat the codebreaking-in-Philippines claim as low confidence. What is reasonably solid: he was in an infantry communications role, served in both theatres, and the experience predisposed him to the postwar codebreaking-machine world that became ERA.

Education

The popular literature contains genuine confusion. The most reliable secondary sources – Wikipedia, Britannica, the EBSCO biography, the John Markoff obituary – agree:

B.Sc. Electrical Engineering, University of Minnesota, 1949
M.Sc. Applied Mathematics, University of Minnesota, 1951

Both degrees from Minnesota, not Wisconsin. The Wisconsin attribution that turns up in some popular pieces is wrong; he was a Wisconsin native who took both degrees at Minnesota’s Twin Cities campus. (Markoff: “He earned a bachelor’s degree in electrical engineering and a master’s in mathematics from the University of Minnesota in 1951.”)

He recalled in later life that an instructor told him: “If I were you, I’d just go down the street here to Engineering Research Associates” – which is how he ended up at ERA.

ERA Years 1950–1957

Cray joined Engineering Research Associates in St. Paul – most sources say 1950, a few say 1951. ERA had been founded in January 1946 by Navy CSAW codebreaking veterans (see Norris below) and was contracted by the Navy and (after 1949) the National Security Agency to build cryptanalytic machines. By the time Cray arrived, the Atlas (ERA 1101) had just been delivered to the Navy.

He was assigned to Task 29, which became the Atlas II / ERA 1103. His project supervisor was Frank Mullaney, who later said in his CBI oral history: “Seymour had only been there a couple of weeks before I knew we had something very unusual there.” Mullaney recalled walking through the lab, seeing chassis lined up on a workbench with technicians changing components, and asking what they were doing. The reply: “Well, Seymour thought this ought to be changed.” Cray wasn’t even on that subsystem; the team had simply learned to listen. He was 25 or 26 years old.

Through the early 1950s Cray contributed to the ERA 1102, 1103, 1103A (Sperry rebadged the latter as the UNIVAC 1103), and the Naval Tactical Data System (NTDS) computer – Mullaney describes the NTDS as “the first big computer that we built at ERA with transistor circuitry, as I recall,” with “a lot to do with the design” coming from Cray.

ERA was sold to Remington Rand in 1952, then merged into Sperry Rand in 1955. The St. Paul ERA group resented their absorption into UNIVAC’s Philadelphia operation. Mullaney’s oral history is blunt: Pres Eckert “had a very abrasive personality”; the eastern UNIVAC people “thought they were pretty hot stuff”; “we just didn’t appreciate them.” Cray reportedly shared this view but, characteristically, said little.

CDC Founding and the 1604 1957–1962

The CDC walkout was not Cray’s idea. According to Mullaney’s CBI oral history (the most detailed first-person account), the original instigators were Arnold Ryden (ERA’s former treasurer) and Byron Smith, who pitched the idea to Mullaney over dinner at the Minneapolis Athletic Club in early 1957. Mullaney declined initially and told Norris. Months later, Norris told Mullaney over lunch at the Criterion: “He had given it a try, he had given it a fair try, and boy, he was ready to hang it up.” That triggered the formation.

Norris and Mullaney resigned together on 26 July 1957 (Mullaney looked it up in his wife’s scrapbook during the interview). Cray and Jim Thornton resigned several months later, in September 1957 – Cray had to complete his obligations on the NTDS project for Sperry, partly to protect CDC’s eventual standing with the Navy. Mullaney: “When somebody would say they were interested, I’d say well, okay, we don’t have anything to do, but let me get you on record… we had a whole cabinet full shortly.” He was emphatic that Sperry’s later lawsuit alleged solicitation, but in fact “we were fighting people off.”

Roughly seven to eight people are usually counted as founders, depending on the source. The clearest count appears to be: Norris, Mullaney, Cray, Ryden (early treasurer), Willis Drake (early marketing director), Robert Kisch, William Keye, Howard Shekels, with three financiers including Walter G. Andrews and Robert F. Leach on the early board.

The famous IPO: rather than seek venture capital, the founders used a little-known Minnesota statute that permitted stock sales to in-state residents only without SEC filing – effectively keeping the new company invisible to Sperry until incorporation. 600 000 shares were offered at $1 each. By September 1957 they had received commitments for $1.2 million, double the prospectus target. Norris’s personal contribution is variously cited at $75 000 (which I cannot confirm in the canonical sources) – what is well documented is the $1-per-share figure, the 600 000 shares, and the $1.2M total. CDC was incorporated in Minnesota on 8 July 1957 (per Wikipedia), with the formal start-of-operations announcement on 14 August 1957.

The company started in a warehouse at 501 Park Avenue, Minneapolis. Mullaney’s oral history is vivid: “We came in at night and we put together the benches because they were cheaper that way… we didn’t even have a quarter inch drill – Perkins brought his drill in.” Salaries were cut to conserve cash through the 1958 recession.

The CDC 1604 was, per Mullaney’s account, Cray’s spontaneous initiative. With no contracts in early 1958, Cray “was tinkering in the lab” designing transistor circuits. He came to the others and said: “Look, we don’t have any jobs anyway, why don’t we build a computer?” He had already prototyped a small one-character-wide test machine – “Little Character” – to validate the circuitry. The 1604 designation came from adding the company’s address (501) to the ERA-UNIVAC 1103 he had previously worked on.

The Bureau of Ships eventually ordered the first 1604; it shipped in 1960. It was Cray’s first complete machine as lead architect.

The Chippewa Falls Move 1962

Cray demanded his own laboratory in Chippewa Falls in 1962. He wanted distance from CDC headquarters: as the Wikipedia summary puts it, “far enough that it would be too long a drive for a ‘quick visit’ and long-distance telephone charges would be just enough to deter most calls, yet close enough that real visits or board meetings could be attended without too much difficulty.” There was also a Cold War element: Cray apparently believed nuclear war was likely and judged the Twin Cities a target; he built a bomb shelter at his Chippewa Falls property.

Norris agreed. The lab was built on land Cray owned in his hometown, on a river bluff. It became Cray’s effective fiefdom for the next decade. The famous quote “I don’t want to live in Minneapolis” appears in many secondary tellings of this episode but I could not pin it to a primary source – treat it as paraphrase rather than verbatim. The Wikipedia summary captures the gist without quoting.

CDC 6600 and 7600

The CDC 6600 shipped in 1964 – a team of 34 engineers led by Cray, Jim Thornton, and Dean Roush had built what most historians now call the first true supercomputer. It ran at roughly 3 MIPS, three times faster than IBM’s 7030 Stretch. Thomas Watson Jr.’s famous internal memo (genuinely documented) demanded to know how a team of 34 in rural Wisconsin had outperformed IBM’s massive engineering organisation. The 6600 made CDC profitable.

The CDC 7600 shipped in 1969 – five times the 6600. It powered NCAR (serial 12, 24 May 1971) and other scientific computing centres into the early 1980s, though it broke down once a day or more.

The CDC 8600 was Cray’s next project: a four-CPU brute-force machine. CDC management cancelled it in 1972 amid corporate cost pressures. That cancellation triggered Cray’s departure.

Cray Research 1972–1989

Cray left CDC in 1972 with Norris’s blessing and a $300 000 (some sources say $250 000) CDC equity injection – both figures appear in the secondary literature; the discrepancy is unresolved. He founded Cray Research Inc. in Chippewa Falls in 1972.

The Cray-1 shipped in 1976 (Los Alamos serial 1; NCAR serial 3 in July 1977 was the first paying customer at $8.86 M). 80 MHz, 160 MFLOPS peak, the iconic C-shaped cabinet with the cooling jackets and the upholstered bench around the base. Over 80 units sold. Already covered in our Post 26 (“The Machine That Looked Like Furniture”).

The Cray-2 (“Bubbles”) shipped in 1985 – four processors, Fluorinert liquid-immersion cooling, 1.9 GFLOPS, 256 megaword memory.

Cray resigned as CEO in 1980 to focus on design, becoming an independent contractor. In 1988 he relocated to Colorado Springs with the Cray-3 project; in 1989 the Cray-3 was spun off into a new company.

Cray Computer Corporation 1989–1996

Cray Computer Corporation (CCC) in Colorado Springs pursued the Cray-3 using gallium arsenide (GaAs) semiconductors instead of silicon. Lawrence Livermore had been the launch customer; LLNL cancelled in 1991. Only one production unit – serial S5, “Graywolf” – was completed. It was delivered to NCAR on 24 May 1993 as a test/evaluation system, sixteen years to the day after NCAR had received its CDC 7600. CCC filed Chapter 11 on 24 March 1995.

In August 1996 Cray announced his next venture, SRC Computers, focused on massively parallel architectures with a memory and communications emphasis – a striking shift for a man who had spent his career insisting that one fast CPU beat any cluster.

Death October 1996

On Saturday 22 September 1996 (some sources say 23 September; one says 24 September – the discrepancy is genuine), Cray was merging his Jeep Cherokee onto Interstate 25 near the United States Air Force Academy in Colorado Springs. Another vehicle attempted to overtake him; the Jeep was struck and rolled three times. The other driver was cited for careless driving.

Cray suffered a broken neck, severe head injuries, and fractured ribs. He was hospitalised at Penrose Community Hospital in Colorado Springs and died there on 5 October 1996, aged 71. Two weeks after the accident.

The vehicle is consistently identified as a Jeep Cherokee (not Grand Cherokee, despite the popular conflation). The location is confirmed: I-25 near the Air Force Academy.

Personality and Quotes

The canonical quotes – many promulgated by Cray Research CEO John Rollwagen (“Rollwagenisms”) and now treated with some scepticism by surviving Cray Research employees:

“Anyone can build a fast CPU. The trick is to build a fast system.” – Genuine, repeatedly cited; reflects his late-career emphasis on memory bandwidth and interconnect.
“If you were plowing a field, which would you rather use? Two strong oxen or 1024 chickens?” – Genuine; on parallel computing. Often quoted with slight variations.
“Five-year goal: Build the biggest computer in the world. One-year goal: One-fifth of the above.” – Markoff cites this in his obituary; reportedly a note Cray sent Norris when asked for a five-year plan after founding Cray Research.
“I’m supposed to be a scientific person but I use intuition more than logic in making basic decisions.” – Genuine, widely attributed.
“Don’t do anything that other people are doing. Always do something a little different if you can.” – Genuine.
“I don’t want to live in Minneapolis” – Could not verify in primary sources. Likely paraphrase of his 1962 demand for the Chippewa Falls lab.

The elves and the tunnel: a French scientist asked Cray the secret of his success. “Well, we have elves here, and they help me,” he replied, then showed the visitor a tunnel under his Chippewa Falls house. “While I’m digging in the tunnel, the elves will often come to me with solutions to my problem.” Former Cray Research employee Jim Masocco has stated this is largely a Rollwagen embellishment: Cray dug perhaps four or five yards of basement excavation, never a tunnel between buildings. He found the digging meditative.

The burning sailboat: Cray would supposedly design a sailboat in winter, sail it in summer, and burn it each autumn so he could design fresh next year (“revolution not evolution”). Masocco again: a single boat-burning incident at Lake Wissota became a recurring myth in Rollwagen’s hands.

What does seem genuine: Cray worked with a #3 Ticonderoga pencil and graph paper, refused CAD, lived modestly, drove old cars, hated meetings and speeches (refused most public appearances), and had a workbench almost ostentatiously bare. His status reports were legendarily terse: “Activity is progressing satisfactorily as outlined under the June plan. There have been no significant changes or deviations from the June plan.” That is documented and verbatim.

Personal: married Verene Voll (childhood acquaintance from Chippewa Falls, daughter of a Methodist minister, worked as a nutritionist) in 1947. Three children: Susan (later Borman, of Eau Claire), Carolyn (later Arnold, of Minneapolis), and Steven (of Chippewa Falls). Divorced 1975 (Markoff) or 1978 (some sources). Married Geri M. Harrand in 1976 – after which, per Markoff, he learned to ski and windsurf. Sister Carol Kersten survived him; five grandchildren.

William Norris

Birth, Childhood, Nebraska

William Charles Norris was born 14 July 1911 on a homestead farm near Inavale, Nebraska – some sources say Red Cloud (the nearest larger town); the farm was actually nearer Inavale. He was a twin – his sister was Willa. The farm had been homesteaded by his grandfather in 1872 and ran cattle, hogs, and corn. He attended a one-room country schoolhouse.

Like his future colleagues at ERA, the young Norris was an electronics enthusiast. He built a mail-order radio set and was a licensed ham radio operator as a teenager. The Memorial Tribute mentions a one-room schoolhouse where physics first captivated him.

Family circumstances were strained: he was raised in Depression-era rural Nebraska, and the standard popular biography has his father dying early, leaving him to help run the farm. (The National Academies tribute confirms the “two years on family farm post-graduation during the Great Depression” detail.)

Westinghouse and Wartime Cryptanalysis

Norris earned his B.Sc. Electrical Engineering at the University of Nebraska in 1932, then spent two years on the family farm before joining Westinghouse Electric in Chicago – selling X-ray equipment, per the ETHW profile, then transitioning to vacuum-tube engineering. He worked there roughly 1934–1941.

In 1941 he was commissioned in the United States Naval Reserve as a cryptanalysis officer. He served at the Communications Supplementary Activity – Washington (CSAW), the Navy’s central WWII codebreaking facility located at the Nebraska Avenue Complex in Washington D.C. (CSAW’s wartime peer to Bletchley Park.) He rose to lieutenant commander. His specific technical contributions included “advancing methods for identifying U-boats” – an ambiguous phrase that probably refers to traffic-analysis or HF/DF correlation work rather than cryptanalysis proper. He served roughly 1941–1946.

CSAW dissolved at the end of the war, but the Navy was determined not to lose the technical talent it had built up. Howard Engstrom, Joseph Wenger, and Norris – three CSAW veterans – spearheaded the effort to keep the team together.

ERA 1946–1952

In January 1946 Engstrom, Wenger, and Norris connected with John E. Parker, a US Naval Academy graduate and investment banker who had run the Northwest Aeronautical Corporation (NAC), a wartime glider manufacturer in St. Paul, Minnesota. Parker’s glider factory at 1902 Minnehaha Avenue had just shuttered. After visits from increasingly senior Navy officers (including Secretary James Forrestal), Parker agreed to house the new venture there. Initial funding was $220 000.

Engineering Research Associates (ERA) opened in St. Paul in early 1946 with roughly forty former CSAW codebreakers transplanted from Washington. ERA was technically a “declared Navy Reserve base” with armed security. Norris was founding vice-president.

ERA built the Goldberg drum-based codebreaking machine (Task 9, 1947–1948), the Demon Soviet-codebreaking machine (1948), and – on Task 13 awarded by the Navy in 1947 – the ATLAS stored-program computer, delivered to NSA in 1950. The commercial sibling was the ERA 1101 (binary 1101 = 13). The ERA 1102 was an 1101 rebuilt with 1103 circuitry; the ERA 1103 was Task 29 / Atlas II, a fast two-address machine using electrostatic and then core memory.

A 1950 ERA technical book, High-Speed Computing Devices, made remarkably prescient predictions about transistors – “It will probably be competitive with the electron tube in total cost per stage.”

Sperry-Rand Years

In 1952 ERA was acquired by Remington Rand for reasons that included financial pressure and a Drew Pearson newspaper campaign alleging conflicts of interest in ERA’s wartime Navy connections (which had drained the firm legally and emotionally). In 1955 Remington Rand merged with Sperry Corporation to form Sperry Rand; ERA and the earlier-acquired Eckert-Mauchly Computer Corporation were both folded into the UNIVAC division.

Norris was promoted to head the UNIVAC division (Mullaney calls this a sign that “St. Paul” had finally been heard at the top). But the new structure pitted the practical-engineering St. Paul team against the theoretically-oriented Philadelphia Eckert-Mauchly team, and Norris reportedly chafed under his bosses Marcel Rand and Thornton Fry (a senior engineering manager Mullaney describes scathingly as “a hatchet man” sent to police the divisions).

In April 1957 a memo restructured Norris’s role – formally “emphasising military operations in St. Paul” but, per Mullaney, “Norris’ job was being cut way back, and that he was being sent back to the boonies.” That triggered the walkout.

CDC Founding 1957

Norris led the walkout in July 1957 (he resigned the same day as Mullaney, 26 July 1957) and was the unanimous choice for president. He brought managerial gravitas, ERA-era credibility with Navy and NSA customers, and the personal network that made the Minnesota-only stock offering possible.

The 600 000-share, $1-per-share IPO raised $1.2M by September 1957 – twice the prospectus target. CDC was incorporated 8 July 1957, with operations announced 14 August 1957, in the 501 Park Avenue Minneapolis warehouse. (Sources I checked do not confirm Norris’s personal $75 000 stake – I could not verify that figure, only the overall IPO totals.)

CEO 1957–1986

Norris was president and CEO of CDC for 29 years, 1957–1986. CDC grew from the warehouse startup to a peak of roughly 60 000 employees globally and $5 billion annual revenues. Major milestones:

1958 – early CDC sells magnetic-drum memory subsystems to other manufacturers.
1960 – CDC 1604 ships, the first complete CDC computer.
1964 – CDC 6600 ships, the world’s first true supercomputer.
1968 – CDC sues IBM over the announced-but-vapourware ACS-1 (“6600 killer”). The case settled in 1973 with CDC awarded $600 million in damages and assets – a landmark antitrust outcome. Same year, CDC acquired Commercial Credit Company, which became a major financing arm (and bizarrely brought CDC a fleet of Chesapeake Bay fishing boats during the takeover battle).
1972 – Norris blesses Cray’s departure with a $300 000 (or $250 000) equity injection.
Late 1970s – CDC acquires more peripherals and services businesses; PLATO commercialised.
1986 – Norris retires January 1986; succeeded by Robert M. Price.

CDC produced 80+ technology spin-off companies during Norris’s tenure and counted itself, by mid-1980s, among the nine major US computer manufacturers.

Norris is unusually significant in tech-business history not for his computers but for his sustained, idiosyncratic insistence that business should solve social problems. After hearing Whitney Young of the National Urban League speak at a 1967 CEO seminar about Black Americans’ economic exclusion, Norris began moving CDC manufacturing capacity into inner-city neighbourhoods (eventually five inner-city plants plus two rural communities – Northside Minneapolis, the South Bronx, Washington D.C., among others) and championed minority hiring and training programmes. He pushed CDC into prison-rehabilitation computing, agricultural credit programmes, and small-business incubators.

His best-known initiative was PLATO (Programmed Logic for Automated Teaching Operations), the computer-based education system originally developed at the University of Illinois at Urbana–Champaign by Donald Bitzer’s team. NSF funding ran out in the early 1970s; Norris had CDC pick up commercial development in 1974, with the product released in 1975. PLATO was technically influential (touch screens, plasma displays, online courseware decades before the web) but commercially struggled because of high costs; it found mostly an internal-training market. Norris kept it alive far longer than business logic alone would have justified.

His CDC also funded over 1 000 new companies and generated roughly 13 000 jobs through these programmes (Memorial Tribute figures).

This made Norris widely seen as eccentric in mainstream tech-business circles. When CDC declined in the early-mid 1980s as the disk-drive business eroded, the board pressured him out, citing the social programmes as a distraction. Most historians (and the Memorial Tribute) judge that case unproven: “any connection [between social programmes and decline] is difficult, if not impossible, to find.”

Retirement and Death

Norris retired as CEO in January 1986. He chaired the William C. Norris Institute from 1988 to 2000 (later merged into the University of St. Thomas), continuing to advocate for technology-driven social entrepreneurship.

His book New Frontiers for Business Leadership (1983) summarised his social-purpose corporate philosophy; he had also written articles in Technology Review, Forbes, and Business Week.

Awards and honours:

National Medal of Technology, 1986 (presented by President Reagan)
IEEE Founders Medal, 1985
IEEE Computer Entrepreneur Award, 1985 (joint with Kenneth Olsen of DEC)
National Business Incubation Association Founders Award
Minnesota High Tech Association Lifetime Achievement Award, 1995
Tekne Award (Minnesota High Tech), 2001
Ellis Island Medal of Honor, 2005

Norris died 21 August 2006 in Bloomington, Minnesota, at age 95, in a nursing home, after a long battle with Parkinson’s disease. He was survived by his wife Jane Malley Norris and eight children (William, George, Daniel, Brian, Roger, David, Constance Van Hoven, and Mary Keck), 21 grandchildren, and six great-grandchildren.

He was buried in Minnesota. His papers are at the University of Minnesota Archives (CBI is the main CDC archive); the CBI also holds the 192-page oral history he gave Arthur Norberg on 28 July and 1 October 1986, the most authoritative single primary source on his life.

Frank Mullaney

Birth, Education

Frank Charles Mullaney was born in St. Paul, Minnesota, in 1923 – per his own statement in the CBI oral history (the most reliable source). FamilySearch records confirm 1923–2001 as his lifespan; he died at age 78. He had a brother and sister.

His father had been a jeweller in St. Paul (“first with my uncle and then he started a jewelry store of his own”); the Depression closed the store, and his father switched to law enforcement, eventually becoming superintendent of the Ramsey County Workhouse. His mother was a homemaker.

Mullaney attended Gordon School, then St. Mark’s Catholic School, then St. Thomas Academy for high school. St. Thomas Academy at the time was a heavily military prep school – four years of infantry ROTC was required. Like the young Norris, he was a radio ham, joined the St. Paul Radio Club around 1938, and met fellow future ERA engineer Jack Hill there.

He entered the University of Minnesota in 1939 in the electrical engineering communications option (the only undergraduate path that approached electronics). He worked 20–40 hours a week as a radio operator at WMIN, a 250-watt Minneapolis station, to fund his tuition. He took the Signal Corps ROTC for one year. Among his classmates and acquaintances who would later end up at ERA: William Keye, Erwin Tomash, Cliff Helms, Bob Erickson, Bob Murnane, Ed Nelson.

He graduated University of Minnesota BSEE in 1943, the same class year as several future ERA colleagues.

ERA / Sperry Years

Mullaney took a job at General Electric in Schenectady out of college, working first in the carrier-current laboratory and then on a shipboard radar program for aircraft carriers – his first encounter with microwaves and antenna servo systems. He stayed at GE for about a year.

In 1944 he was commissioned a Naval officer, attended indoctrination at Princeton then sonar school at Key West, and was stationed at the Key West Naval Operating Base for nearly two years. He installed and maintained radio, radar, and sonar equipment on small ships up to destroyer size. (His superior in Miami had repeatedly squashed orders sending Mullaney to the Pacific; he discovered four sets of cancelled orders only on demobilisation.) He was released July 1946.

After a year selling resistors and transformers across the upper Midwest as a manufacturer’s rep (“I hated almost every minute of it”), his brother-in-law Joe Kahnke – already at ERA – recommended him. Mullaney joined ERA in June 1947, recruited by personnel director Ken Busch and director of development John Coombs.

His first project was Goldberg (Task 9), a Navy codebreaking machine, where he was assigned to design the AND-circuit matrix under project engineer Jack Hill (“the best engineer I ever worked for”). He moved to Demon I (delivered to Washington in October 1948), then to Atlas / Task 13 / ERA 1101, where he worked on the control system – decoding machine instructions into micro-instruction sequences.

When the 1101 went commercial, Mullaney became its project engineer. When Task 29 (Atlas II / 1103) arrived in 1951, he became project engineer, then project supervisor – and that is when Seymour Cray, Jim Thornton, Tom Rowan, Chuck Pence, Pete Zimmer, and Bob Kisch all joined the team reporting to him. As he told Norberg: “Most of them were right out of school… Some of them, in a hurry I could tell… Seymour had only been there a couple of weeks before I knew we had something very unusual there.”

Through the Sperry years (1952–1957) Mullaney rose to department manager / division director running ERA-Minnesota’s military side (NSA Bogart special-purpose machines, NTDS Naval Tactical Data System, Tactical Air Control System / TACS, missile work). The 1103 commercial line was also under him.

His CBI oral history is acidic on Sperry management. UNIVAC-Philadelphia was “extremely competent” but “we built better hardware in St. Paul.” Pres Eckert had “a very abrasive personality.” Marcel Rand was “a light-weight”; Thornton Fry “a hatchet man”; Leslie Groves (briefly Sperry’s general manager for the computing side) “was not the right man for the job.”

CDC Co-Founder 1957 and Career

Mullaney was the second person Arnold Ryden and Byron Smith approached in their original walkout plan – before Norris was even involved (see Cray section above). He initially declined and tipped Norris off. When Norris later told him he was ready to leave, Mullaney joined.

He resigned from Sperry on 26 July 1957, the same day as Norris. At CDC he was a senior engineering executive – variously vice-president for engineering and operations (popular accounts confirm “all these engineers… were vice presidents of Control Data at some point in their careers”). He oversaw CDC’s software development through the early years before Clair Miller was brought in to specifically head software. He was on the early CDC board of directors alongside Norris, Ryden, Walter G. Andrews, and Robert F. Leach.

The clearest description of his early CDC role comes from his own oral history: in early 1958, with no contracts and the country in recession, Mullaney was running the engineering operation while Cray “tinkered” on transistor circuits in a makeshift lab Mullaney had helped wire up at night with hand-carried benches and Bob Perkins’s drill. When Cray proposed building a computer (“we don’t have any jobs anyway, why don’t we build a computer?”), Mullaney was one of the senior managers who agreed and helped land the Bureau of Ships contract that funded the 1604.

The public record on Mullaney’s later CDC career is genuinely sparse. Contemporary CDC histories focus on Norris and Cray; popular sources mention Mullaney almost exclusively in the context of ERA and the 1957 founding. He was a founder, board member, senior engineering executive, and software development overseer in the first CDC era; specific titles, dates of role changes, and any exit date from CDC do not appear in the secondary sources I checked.

His CBI oral history – recorded 2 and 11 June 1986 in Minneapolis, conducted by Arthur L. Norberg – runs about 84 transcript pages and is the single most important primary source on Mullaney’s career. It abruptly ends mid-discussion of CDC’s early years, suggesting subsequent sessions either were not recorded or are not accessible in the public release. Fuller information about his post-1958 CDC roles, his retirement date, and his post-CDC life would require accessing the full CBI Mullaney papers and possibly the additional oral-history materials at the CBI archives.

He is documented as having lived 1923–2001 (died age 78); the cause and place of death I could not establish from the secondary sources searched.

Sources

Cray:

Charles J. Murray, The Supermen: The Story of Seymour Cray and the Technical Wizards Behind the Supercomputer (Wiley, 1997) – canonical popular biography.
“Seymour Cray,” Wikipedia – accessed 2026-04-29.
John Markoff, “Seymour R. Cray, Computer Industry Pioneer and Father of the Supercomputer, Dies at 71,” New York Times, 6 October 1996 (mirrored at https://www.cgl.ucsf.edu/home/tef/cray/obit.html and https://pages.cs.wisc.edu/~bezenek/cray.html) – the most detailed contemporary obituary, including the Battle of the Bulge / Philippines service detail.
“Seymour Cray,” Encyclopaedia Britannica – accessed 2026-04-29.
“Seymour Cray,” EBSCO Research Starters / Encyclopedia.com – accessed 2026-04-29.
NSA Cryptologic History: “Seymour R. Cray and NSA,” declassified October 2018 (https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/history-today-articles/10%202018/05OCT2018%20SEYMOUR%20CRAY%20and%20NSA.pdf) – the codebreaking-context source.
“Seymour Cray and Lake Wissota,” HPCwire (1996); Jim Masocco recollections, Cray-History.net (2023) – on the Rollwagen myths.
See also Seymour_Cray.md and Cray-1.md in this research collection.

Norris:

“William Norris (CEO),” Wikipedia – accessed 2026-04-29.
“William C. Norris,” Engineering and Technology History Wiki (ETHW) – the most detailed online biography.
“William C. Norris,” Memorial Tributes Volume 17, National Academies (https://www.nationalacademies.org/read/18477/chapter/38) – the formal obituary.
“William C. Norris,” EBSCO Research Starters – accessed 2026-04-29.
“William C. Norris,” Minnesota Science and Technology Hall of Fame profile.
IEEE Computer Society profile, https://www.computer.org/profiles/william-norris.
Charles Babbage Institute oral history with William C. Norris, conducted by Arthur L. Norberg, 28 July and 1 October 1986, 192 pages; abstract at https://conservancy.umn.edu/items/b9a398ed-ebfb-421a-bad9-fb2715007174.
Norris papers, University of Minnesota Archives.
“Control Data Corporation,” Wikipedia – accessed 2026-04-29.
“Control Data Corporation,” Minnesota Computing History (https://mncomputinghistory.com/control-data-corporation/) – the IPO mechanism, 600 000 shares at $1, $1.2M raised.
Enterprise & Society article: “From ‘Ward of the State’ to ‘Revolutionary Without a Movement’: The Political Development of William C. Norris and Control Data Corporation, 1957–1986” – scholarly treatment.

Mullaney:

Charles Babbage Institute oral history with Frank C. Mullaney, conducted by Arthur L. Norberg, 2 and 11 June 1986 in Minneapolis, OH 110, 84 pp transcript (https://conservancy.umn.edu/bitstream/handle/11299/107538/oh110fcm.pdf) – by far the richest primary source.
“Engineering Research Associates,” Wikipedia (en-academic) – accessed 2026-04-29.
“Honoring WWII Codebreakers and the Founding of Engineering Research Associates,” Ramsey County Historical Society exhibit – mentions Mullaney as an ERA-1955 employee.
FamilySearch ancestry record for Frank Charles Mullaney (1923–2001), https://ancestors.familysearch.org/en/LT72-FGC – confirms life dates.
“Control Data Corporation,” Minnesota Computing History (above) – positions him as one of the founding senior executives.

Michał Brennek