"#119 U. S. Government Railroad and
Highway - leading to Dam Site -from Hoover Point. Sept. 3, 1931.
#186 California-Nevada Power Co., Substation, near Dam-site. Government Railroad and Government Highway from Boulder City to Dam.
#205 Six Companies' Railroad grade down Canyon between Cape Horn and Upper Portals No. 1 and No. 2 - Sept. 18, 1931.
#215 Six Companies' track laying crew in
Hemenway Wash, between Government Junction and Junction City - Sept. 19, 1931."
black and white photographs 4 x 5.3 in. or 8 x 4.8 in. paper background 10 x 13.5 in.
Archived TIFF images were scanned by Kathleen Broeder at 400 dpi with an Epson Expression 10000XL scanner. Digital images were reformatted in Photoshop. JPG and PDF files were then created for general use.