"3512 Looking upstream in the Arizona Valve House. Note three gates and needle valves have been installed. October 29th, 1935.
3497 View from the top of Boulder Dam, looking toward the Power House, Valve Houses and lower portals of the Diversion Tunnels. October 28th, 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.