From the Syphus-Bunker Papers (MS-00169). The folder contains an original handwritten letter, a typed transcription of the same letter, the original envelope split in half and the stamp removed, and a copy of the original letter.
From the Morgan Sweeney Photograph Collection (PH-00228). Hoover Dam switchyard, circa 1950s. Stamp on the back reads, "Photograph by Bureau of Reclamation BCP 9187 Boulder Canyon Project Boulder City, Nevada."