"3549 Looking south toward Boulder Dam Switchyard, showing the construction and excavation. November 26th, 1935.
3551 Looking upstream along the Nevada approach to Boulder Dam. Note the rubble wall being built and excavation for tower footings. November 26th, 1935.
3531 Looking upstream in lower No. 3 Plug. Note one of the pipe sections in place. November 25th, 1935.
3554 Looking upstream in lower No. 2 Plug, showing pipe in place. November 25th, 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.