• 178 Videos, Slides, Films
• 2 Books

• 68 History
• 46 Presidents
• 36 Immigrants
• 35 Politics and government
• 33 Labor
• 32 Industries
• 30 Economics
• 27 Imperialism
• 26 Democracy
• 25 Territorial expansion
• 24 Power (Social sciences)
• 23 Law and legislation
• 23 Legislation
• 21 Commerce
• 10 Indians of North America
• 10 Social conditions
• 9 Constitutional history
• 9 Constitutional law
• 9 Middle class
• 8 Courts
• 8 United States Constitution
• 6 African Americans
• 6 Economic policy
• 6 Minimum wage

• 121 Films Media Group
• 90 Films for the Humanities & Sciences (Firm)
• 54 Alexander Street Press
• 47 United States. White House Office
• 45 Obama, Barack
• 28 Annenberg Learner (Firm)
• 21 Public Broadcasting Service (U.S.)
• 11 Infobase
• 10 Cambridge Educational (Firm)
• 9 Arts and Entertainment Network
• 8 FremantleMedia
• 5 Burns, Ken, 1953-
• 5 KERA Dallas/Ft. Worth (Television station)
• 4 A&E Television Networks, LLC
• 4 Intelligence² (U.S.)
• 3 University of Notre Dame
• 3 WQED Multimedia
• 2 ABC News Productions
• 2 Biden, Joseph R., Jr
• 2 Fred Friendly Seminars (Firm)
• 2 Hedrick Smith Productions
• 2 MacNeil/Lehrer Productions
• 2 WPA Film Library
• 1 Ackroyd, David
• 1 AppliedInfo Partners

• 179 English
• 2 Spanish
• 1 Undetermined

• 4 West (U.S.)
• 2 New York (N.Y.)
• 1 Badlands (S.D. and Neb.)
• 1 Boston (Mass.)
• 1 China
• 1 Europe
• 1 Great Plains
• 1 Guatemala
• 1 Iowa
• 1 Mexican-American Border Region
• 1 Mexico
• 1 Milwaukee
• 1 Oglala Sioux Tribe of the Pine Ridge Reservation, South Dakota
• 1 Pleasant Hill (Ky.)
• 1 Postville
• 1 Postville (Iowa)
• 1 San Antonio, Texas
• 1 Transcontinental Railroad National Back Country Byway (Utah)
• 1 Wisconsin

• 90 Educational films
• 76 Videorecording
• 50 Video recordings for the hearing impaired
• 47 Speeches
• 46 Messages
• 13 Video recording
• 6 Documentary films
• 3 Nonfiction films
• 2 Case studies
• 2 Feature films
• 2 Interviews
• 1 Biography
• 1 Documentaries and Factual Films
• 1 Webcast

Limit year range