Description
A spreadsheet for IBM mainframes, written by Tandemsoft for engineers.
Provenance
Sent to Lazarus by post, with a note asking whether anything could be saved. The tape was sticky with binder breakdown and was baked at low temperature before a single careful read. All of the work survives. The repairs are listed in the record’s damage map.
Preservation
- Fixity (SHA-256)
34f345b3af7f4e1c5a8ca94d4a26719ce4f6ca3b1ae29dfe8c3d22c1b0050aa1- Last verified
- Sep 25, 2026, by Vigil
- Emulation profile
- LZE-MVS-3 · lz-s370 core
- Copies
- Three, on two kinds of storage, in two cities
- Original carriers
- Kept in cold storage in Vancouver
Access
Free, in reading rooms only, under the Lazarus orphan works policy.
In the reading room it runs in emulation under profile LZE-MVS-3, from a read-only copy of the recovered image, as it would have on IBM mainframes.
Cite as: Tandemsoft, KeystoneCalc (1967). Lazarus Archive, LZ-37658.