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.
For voice and piano. ; Caption title. ; Black and white lithograph depicting nine non-descript scenes surrounding a series of bayonets holding banners with words of the title. ; Verses 3-5 printed as text on page [4]. ; "Electrotyped by Smith &…