Lazarus Archive · LZ-36350

Helix Ledger 4.3

Port Whitebrook Software, 1990. Application software for the PDP-11.

Description

An accounting package for the PDP-11, published by Port Whitebrook Software in 1990.

Provenance

Deposited by Basalt Heritage Collection. The label reads ‘Photos’. All of the work survives. The repairs are listed in the record’s damage map.

Preservation

Fixity (SHA-256)
cb80407bfd1638a3795d2f971ddf24d534be74b1b9058dfbe24f31eb11afe984
Last verified
Sep 18, 2026, by Vigil
Emulation profile
LZE-PDP11-3 · lz-pdp core
Copies
Three, on two kinds of storage, in two cities
Original carriers
Kept in cold storage in Vancouver

Access

Free, in the Lazarus reading room in Vancouver and in partner reading rooms. The license does not permit copies to be taken away.

In the reading room it runs in emulation under profile LZE-PDP11-3, from a read-only copy of the recovered image, as it would have on the PDP-11.

Cite as: Port Whitebrook Software, Helix Ledger 4.3 (1990). Lazarus Archive, LZ-36350.

Also by Port Whitebrook Software

Nearby in Minicomputers and Mainframes

The whole collection →