TTI-Otis monorail, Transpo '72 Description: View of a TTI-Otis monorail at Transpo '72. Handwritten on back: "TTI-Otis people movers, Transpo 72." Details Resource ID: na049124 Subject: Monorails--Washington (D.C.) Air Transportation Conference (1972 : Washington, D.C.) Photographic prints Date Issued: 1972 Format: 1 photographic print ; 3.25 x 4.5 in. Member of: National Automotive History Collection Filing Location: MS121/VanDegrift, Thomas, 15:1 Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.
