"3335 Looking downstream, in the Nevada Valve House. June 24th, 1935.
3331 Looking upstream, on the Nevada side of Black Canyon, toward Boulder Dam, showing the road tunnel portal
June 24th, 1935.
3318 View taken from the Valve House catwalk, looking upstream toward the Power House. June 24th, 1935.
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.