• 18 Verona Shelving Facility
• 6 WHS State Archives Preservation Facility
• 5 Wisconsin Historical Society Archives
• 3 MERIT Library
• 3 Memorial Library
• 2 Chican@ and Latin@ Studies Library
• 2 College Library
• 2 UW Archives
• 1 Law Library
• 1 Memorial Library Microform/Media Center
• 1 Music Library (Mills)
• 1 Wisconsin Historical Society Library
• 1 Wisconsin's Water Library

• 4 Mixed Materials
• 2 Photos, Drawings, Prints
• 1 Books
• 1 Sound Recordings

• 27 DVDs
• 5 VHS Videocassettes

• 58 Politics and government
• 50 History
• 16 Social conditions
• 14 Environmental aspects
• 14 Political aspects
• 13 Conservation of natural resources
• 13 Environmental policy
• 13 Environmental sciences
• 11 Green movement
• 11 Political activists
• 10 Economic conditions
• 9 Climatic changes
• 9 Environmental protection
• 9 Environmentalists
• 8 Social aspects
• 7 African Americans
• 7 Economics
• 7 Human ecology
• 7 Pollution
• 7 Presidents
• 7 Social change
• 7 Social life and customs
• 7 World politics
• 6 Ecology
• 6 Economic aspects

• 67 Films Media Group
• 36 Films for the Humanities & Sciences (Firm)
• 25 Infobase
• 23 Green, John
• 21 Kanopy (Firm)
• 15 Crash Course US History
• 15 Knowledgemotion Ltd.
• 12 Public Broadcasting Service (U.S.)
• 11 Alexander Street Press
• 10 Paper Tiger Television Collective (Firm)
• 8 Muller, Stan
• 7 WETA-TV (Television station : Washington, D.C.)
• 6 Green Planet Films
• 6 Green Planet Films (Firm)
• 5 BBC Worldwide Ltd.
• 5 Crash Course World History
• 5 Inkwell Films (Firm)
• 5 McGee Media (Firm)
• 4 Bullfrog Films
• 4 Ethical Markets Media
• 4 Farrow, Nick
• 4 Gates, Henry Louis, Jr.
• 4 Green Room Productions
• 4 Holmes, Abbe
• 4 Vujist, Freke

• 219 English
• 6 Chinese
• 6 Spanish
• 5 Undetermined
• 3 Russian
• 2 German
• 2 Multiple languages
• 2 Persian
• 2 Portuguese
• 1 French
• 1 Lao
• 1 Quechua
• 1 Thai
• 1 Unknown

• 61 United States
• 8 California
• 6 China
• 6 Wisconsin
• 5 Southern States
• 4 Africa
• 4 France
• 4 Great Britain
• 3 Africa, Sub-Saharan
• 3 Brazil
• 3 Europe
• 3 Germany
• 3 India
• 3 Italy
• 3 Russia (Federation)
• 3 Taiwan
• 3 U.S. states
• 3 Venice (Italy)
• 2 Australia
• 2 Canada
• 2 Chechni︠a︡ (Russia)
• 2 Davos (Switzerland)
• 2 Iran
• 2 Latin America
• 2 Los Angeles

Limit year range