@SFOMuseum Twitter Posts This is SFO Museum's archive of the @SFOMuseum Twitter account.
📸 3/3: A woman operates a foolproof American SIGABA cipher machine, decrypting messages, and intercepting and forwarding enemy coded messages c. 1944 Courtesy of the National Cryptologic Museum (@NatCryptoMuseum) R2021.0910.003. This tweet was posted on March 28, 2022.