Pg.89 #3423 Interior view of Nevada Valve House, looking downstream. Note N-6 Emergency Gate being installed. Aug. 27, 1935. Pg.89 #3424 Nevada Valve House roof, looking upstream. Note low strength pedestals and double layer of railroad iron being placed. Aug. 27, 1935. Pg.89 #3407 Switchyard control house, yard and present sub-station. View taken looking toward Boulder Dam. Aug. 26, 1935.
Pg.90 #3417 View of Arizona side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3397 Nevada construction adits, Valve House and plug adit portal. Note absence of upstream end of lower portal road tunnel. Aug. 21, 1935. Pg.90 #3412 View of Nevada side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3431 View taken from downstream Nevada Plug adit, looking toward No.2 downstream plug. Aug. 27, 1935.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. The first is of a car driving through the Roosevelt Arch. The second image is of the Spiral Bridege, "s" hill, Cody Road. The third image is the Shoshone canyon and tunnel. The fourth image is Sylvan Lake, Cody Road.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is a nondescript view somewhere in Yellowstone National Park. Image two depicts a natural bridge in Yellowstone National Park. Image three is of the Golden Gate Canyon. Image four is of the Entrance to Hoodoos.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is a nondescript view somewhere in Yellowstone National Park. Image two depicts Castle Well and Castle Cone. Image three is of the Upper Geyser Basin. Image four is of Sponge Geyser.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is a nondescript view of a spring somewhere in Yellowstone National Park. Image two is of the Orange Springs Formation. Image three depicts the Oblong Geyser Crater. Image four is of Punch Bowl Spring.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is a nondescript view of a spring somewhere in Yellowstone National Park. Image two is of the Gotto Geyser Formation. Image three depicts the Sapphire Pool and Biscuit Basin. Image four is of Firehole Cascade.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is an unidentified group of people somewhere in Yellowstone National Park. Image two is of the Great Fall of the Yellowstone. Image three depicts the Chittenden Bridge and Auto Stages. Image four is of The Great Fall from below.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is an unidentified bridge somewhere in Yellowstone National Park. Image two is of the Great Fall from Red Rock. Image three depicts the Grand Canyon from Artist Point. Image four is of Upper Fall.
From the Maurine and Fred Wilson and Dr. William S. Park Photograph Albums (PH-00222) -- Album 2 -- Four images. Image one is an unidentified view somewhere in Yellowstone National Park. Image two is of the Eagle Nest Rock in Gardiner Canyon. Image three depicts the Grand Canyon from Brink of Great Fall. Image four is of Needle in Grand Canton near Tower Fall.