| Title: | It Wasn't All Magic: The Early Struggle to Automate Cryptanalysis, 1930s-1960s |
| Author: | Burke, Colin B., 1936- |
| Note: | originally published by NSA Center for Cryptologic History, 2002; redacted declassified version released 2013 |
| Link: | PDF at governmentattic.org |
| Link: | multiple formats at archive.org |
| Stable link here: | https://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp61954 |
| Subject: | Cryptography -- United States -- Automation -- History |
| Subject: | United States. National Security Agency -- History |
| Call number: | Z103.4 .U6 |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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