"3319 Panorama view, showing Six Companies Inc. work on the Arizona side of Black Canyon Highway
3320 June 24th, 1935.
3327 Arizona Valve House, from the Nevada side. June 24th, 1935.
3328 Nevada Valve House, from the Arizona side. 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.