The visual materials series (1927-1991) contains photographs and transparencies of places such as Las Vegas, Nevada; the Hoover Dam; Sedona, Arizona; Oberlin, Ohio; and other states Robert Woodruff traveled to during cross-country road trips. The material documents city scenes, community events, landscapes and animal life, national and state parks, and Woodruff's family. Cities and places around Nevada include Goodsprings, Tonopah, Rhyolite, Boulder City, Mount Charleston, Valley of Fire, and Death Valley. Events pictured include Henderson's Industrial Days, Helldorado, and the construction of the Hoover Dam. Materials are comprised of formats including 4x5 photographic prints; 35 mm, 120 mm, and 4x5 negative and positive transparencies; and 35 mm and 120 mm projection slides. The series also contains audio reels, a cassette tape, two early cameras, and a slide viewer.