A recovered part of the original Japanese Type B cipher machine, codenamed "Purple" by the United States, on display at the National Cryptologic Museum in Washington DC.
Two women at work at the U.S. Army during World War II. The woman on the right is inputting ciphertext into an analog of the Japanese Type B Cipher Machine, codenamed "Purple" by the United States.
The god Dionysus stands holding a bunch of grapes in one hand and pinecone-like object in the other. He is crowned with a wreath of grapes and clothed in a knee-length robe, animal-hide vest and open-toed boots.