Ann Hardy wrote Tymshare's SDS-940 operating system, but colleagues credited it to her husband Norman — who had to disclaim it directly

Ann Hardy wrote the operating system for Tymshare's SDS 940 timesharing service in the 1960s–70s and rose to become a Tymshare vice president. According to the Computer History Museum's retelling of its own oral-history material, colleagues believed her husband, Norman Hardy, had written the operating system she actually authored — and he reportedly had to correct them directly: "I don't know anything about the operating system. I've never looked at the code."

The CHM blog surrounds the claim with corroborating detail on a culture that discounted her actual authority: a pay gap (misattributed by the 2026-07-09 audit to her earlier IBM years) that a 2026-07-23 verification session's direct read of the CHM 2016 primary oral history instead pins to 1967 Tymshare stock options — Ann Hardy states Tymshare gave her "very few," "less than half of what they gave any of the men, even though some of the men were essentially working for me," with cofounder Dave Schmidt's stated reason being that options "would tempt a woman to continue to work instead of stay home and have children." The capture also notes that IEEE Spectrum republished the account independently (not independently re-checked this session).

Flag — [unverified — needs primary oral-history text]. This is a surprising, load-bearing biographical claim, and the sourcing floor (00-meta/sources.md) escalates surprising/contested biographical claims to Tier 1–2 primary. The Tier-2 CHM blog is an institutional retelling of the museum's oral-history archive; the raw oral-history transcript — where the disclaimer quote would live verbatim — was not read at capture. The exact attribution is routed for verification: question-verify-ann-hardy-os-credit-primary-oral-history. The note stays status: seedling until that primary is read.

Update, 2026-07-23: two independent primary transcripts have now been read in full (see audit_status above and claim-norman-hardy-tymnet-account-confirms-ann-hardy-wrote-os for Norman Hardy's own independent corroboration). The misattribution episode is Tier-1 confirmed in Ann Hardy's own words, twice, years apart. The flag now narrows specifically to the exact disclaimer sentence attributed to Norman Hardy, which does not appear, verbatim or in substance, in either transcript read — the note stays seedling on that narrower ground, not the broader one.

The structural interest is that this is a credit-misattribution case in a new domain for the vault. Its existing cluster on the topic — claim-linnainmaa-priority-not-paternity, backpropagation-gap, myth-werbos-invented-backpropagation — concerns algorithmic priority: who first derived a method. This case concerns authorship credit for built work, misdirected along a gender line to a spouse. Same failure mode (the wrong name attached to real work), different mechanism.