• 3 Videos, Slides, Films

• 3 History
• 1 Buildings
• 1 Dams
• 1 Documentary films
• 1 Empire State Building (New York, N.Y.)
• 1 Employees
• 1 Inventions
• 1 Railroad engineering
• 1 Railroads
• 1 Safety appliances
• 1 Tall buildings
• 1 Video recordings

• 3 Alexander Street Press
• 3 History Channel (Television network)
• 3 Nash, Bruce M
• 2 Hearst Entertainment (Firm)
• 2 Jaffe Productions
• 2 New Video Group
• 1 A & E Home Video (Firm)
• 1 Actuality Productions
• 1 Ellis, Luke
• 1 Jaffe, Bob
• 1 Kirby, Paul
• 1 Perkins, Jack, 1933-2019
• 1 Raphael, Max
• 1 Thomas, Andy
• 1 Trinkl, Alison

• 3 English

• 1 Arizona
• 1 Hoover Dam (Ariz. and Nev.)
• 1 Nevada
• 1 New York (N.Y.)

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