The HARVEST computer (a.k.a. IBM 7950) was a one-of-a-kind cryptanalytic machine designed and built by IBM and the NSA in the late 1950s and early 1960s. In 2010, the NSA declassified a number of documents about HARVEST, revealing more of the machine's design and the planning process that led to it. Here, you'll find some of these documents, as well as articles about the history and architecture of HARVEST.

Please direct questions and comments to eric.laforest@gmail.com

File Request Process
How to order archive files from NARA.
Archive Files
Scans of the original archive files and the documents they contain, with outlines.

Technical and Historical Articles

These articles discuss some architectural, logistical, or historical aspects of HARVEST I found interesting.

(here eventually as I go through the documents)