The Professional Papers series (approximately 1900-2007) contains materials relating the Bob Stupak's two Las Vegas, Nevada projects: Bob Stupak's Vegas World and the Stratosphere Hotel and Casino. Materials include architectural drawings for design and planning of both casinos, as well as artistic renderings used for advertisements. Poker tournaments, interior and exterior casino property photographs, and documents relating to the opening and closing of Stupak's properties are also contained in this series. Additionally, these papers contains plans for unbuilt designs, including the Titanic Las Vegas and the "Grip of the Gorilla" attraction planned for the Stratosphere tower. This series also contains audiovisual material relating to Stupak's career, and coupon books he collected as part of his advertising research.

The Hoover Dam and Colorado River photographs depict the Hoover (Boulder) Dam and the Colorado River from 1925 to 1960. The photographs primarily depict the Hoover Dam following its completion in 1935, but also show the dam'’s construction and location in Black Canyon on the Colorado River. The photographs also depict Lake Mead, the reservoir created by the Hoover Dam, as well as Boulder Canyon. The items described include black-and-white photographic prints, postcards, and negatives; items listed are photographic prints unless otherwise specified.