• 164 Videos, Slides, Films

• 53 History
• 16 Study and teaching
• 13 Natural resources
• 12 Conservation of natural resources
• 10 Sports
• 10 United States
• 9 African Americans
• 9 Antiquities
• 9 Physical geography
• 9 Politics and government
• 9 Technology
• 7 Civilization, Ancient
• 7 Environmental policy
• 7 Political participation
• 7 Presidents
• 6 Christianity
• 6 Economic conditions
• 6 Environmental aspects
• 6 Environmental protection
• 6 Environmental sciences
• 6 Ethnicity
• 6 Government policy
• 6 Industrial applications
• 6 Labor
• 6 Local transit

• 144 Films for the Humanities & Sciences (Firm)
• 12 Burns, Ken, 1953-
• 5 Macaulay, David
• 1 Gates, Henry Louis, Jr
• 1 Gazzaley, Adam
• 1 Pollan, Michael
• 1 Sagal, Peter

• 164 English

• 60 United States
• 7 India
• 7 South Asia
• 6 Asia
• 3 New York
• 3 New York (State)
• 2 California
• 2 Europe
• 2 Jerusalem
• 2 Middle East
• 2 North America
• 2 North Dakota
• 1 Adirondack Mountains (N.Y.)
• 1 Alabama
• 1 Antarctica
• 1 Brazil
• 1 China
• 1 Coney Island (New York, N.Y.)
• 1 Connecticut
• 1 Eastern Front
• 1 France
• 1 Great Britain
• 1 Iceland
• 1 London (England)
• 1 Newtown

Limit year range