Boulder Dam [Hoover Dam], Nevada, 1936

16 photographs of construction of the Hoover Dam, Nevada, 1936. "Subject: Boulder Dam., H-13; Agency: 2nd envelope.; Client: Union Oil Co[mpany].,; Classification: I-construction-Boulder Dam; Original Print Order: 1 #11, 1 #1; Size: 8x10, 11x14, 10x14, 3, 11, 17, 8; Finish: gl[ossy], dull; Re-Order: 1 #11, # 1, 3, 12, 9, 1, 1 #9, 1 #41, 1 #11; Year: 1936; Job: 62-22-173"-- on envelope front. "Name: Joe; 18 Original Photographs-Size: 8x10 (2-173), 6, 2-174, 3 Days, #11-West Margins 3/44, 1 #11 Pac Plasties 3/45; Amount: $132.00"-- on envelope back.