File:Civil War cipher disk.jpg
From Infogalactic: the planetary knowledge core
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Original file (1,235 × 835 pixels, file size: 245 KB, MIME type: image/jpeg)
Summary
Photographs scanned from public domain book:
- Brown, J. Willard, The Signal Corps, U.S.A. in the War of the Rebellion, U.S. Veteran Signal Corps Association, 1896, (reprinted by Arno Press, 1974), ISBN 0-405-06036-X.
Licensing
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current | 01:44, 13 March 2023 | 1,235 × 835 (245 KB) | Thales (talk | contribs) |
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File usage
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