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SIS women using Purple Analog

Two women at work at the U.S. Army w:Signal Intelligence Service during World War II. The woman on the right is inputting ciphertext into an analog of the Japanese w:Type B Cipher Machine. The machine, or one like it, is on display at the w:National Cryptologic Museum, where it is identified as an improved version that was introduced in March 1944. See other photos in:Category:PURPLE analog, improved (National Cryptologic Museum)".

Date
1944–1945
Photographer / author
US Army photographer
Archive
Wikimedia Commons
Type
image
Original size
890 × 711 pixels

Public domainsafest

Reason: a US government work.

Read from: Commons licence category: PD US Government; no CC BY, CC BY-SA, GFDL or deletion tag on the file page.

Credit line

"SIS women using Purple Analog" (1944–1945). US Army photographer, via Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:SIS_women_using_Purple_Analog.png

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