• 12 Videos, Slides, Films

• 4 History
• 4 Monuments
• 4 Structural engineering
• 3 Antiquities
• 3 Building, Stone
• 3 Obelisks
• 3 Skyscrapers
• 2 Architecture
• 2 Building
• 2 Colosseum (Rome, Italy)
• 2 Dams
• 2 Great Pyramid (Egypt)
• 2 Inca architecture
• 2 Megalithic monuments
• 2 Pyramids of Giza (Egypt)
• 2 September 11 Terrorist Attacks, 2001
• 1 Amphitheaters
• 1 Anniversaries, etc
• 1 Arch bridges
• 1 Architecture, Ancient
• 1 Architecture, Gothic
• 1 Baths, Roman
• 1 Bridges
• 1 Building failures

• 9 WGBH (Television station : Boston, Mass.)
• 6 WGBH Video (Firm)
• 3 Barnes, Michael, 1948-
• 3 Cort, Julia
• 3 WGBH (Television station : Boston, Mass.). Science Unit
• 3 WGBH Educational Foundation
• 2 British Broadcasting Corporation. Television Service
• 2 Hallet, Judith Dwan, 1941-
• 2 Macaulay, David
• 2 PBS Home Video
• 2 Page, Cynthia
• 2 Sanders, Jay O., 1953-
• 1 ARTE France
• 1 Apsell, Paula S
• 1 Ben Loeterman Productions
• 1 British Broadcasting Corporation
• 1 Bushkin, Tippy
• 1 Channel Four (Great Britain)
• 1 Cinquième (Firm)
• 1 Clark, Liesl
• 1 Contreras, Kevin
• 1 Docere Studios
• 1 Executive Program Services (Firm)
• 1 Fortier, Tennaly
• 1 Friedman, Thomas

• 12 English

• 3 Egypt
• 3 New York
• 3 New York (State)
• 2 England
• 2 Stonehenge (England)
• 1 Aswan Dam (Egypt)
• 1 China
• 1 Clark Bridge (Alton, Ill., and West Alton, Mo. : 1994- )
• 1 Easter Island
• 1 Europe
• 1 Golden Gate Bridge (San Francisco, Calif.)
• 1 Hoover Dam (Ariz. and Nev.)
• 1 Inca (Peru : Region)
• 1 Johnstown (Cambria County)
• 1 Pennsylvania
• 1 Peru
• 1 Rome (Italy)
• 1 Scotland
• 1 South Fork Dam (Pa.)
• 1 United States
• 1 Wiltshire
• 1 World Trade Center Site (New York, N.Y.)

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