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White envelope with writing in black ink. Includes several black hand stamps and censor tape.
Information Provided by Michael D. Bulmash: A censored cover to one of the undercover addresses for the Manhattan Project in Los Alamos, New Mexico during World War II.
3 5/8 x 6 7/16"
"Envelope with Undercover Address for Manhattan Project" (1945). Bulmash Family Holocaust Collection. 2014.1.241.