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Joseph B. Friedman Papers
Eisler Engineering Company records
Pittsburgh Consolidation Coal Company photographs and other materials
Arthur d'Arazien Industrial Photographs
5. Dennis Meadows - Perspectives on the Limits of Growth: It is too late for sustainable development
Sam Bush - "Radio John" (Live Performance Video)
Sam Bush - "In Tall Buildings" (Live Performance Video)
The Making of Woody at 100: The Woody Guthrie Centennial Collection [Behind The Scenes Documentary]
Sam Bush - "A Simple Thing As Love" (Live Performance Video)
Kathy & Carol – "Swallow Song" [Official Audio]
John A. Roebling Collection
Nordberg Manufacturing Company Collection
The Foundation Company Records
American Public Works Association "Top Ten Public Works Projects of the Century -- 1900-2000" Nominations
Henri Gaston Busignies Papers
William J. Hammer Collection