• 33 History
• 11 Frontier and pioneer life
• 10 Indians of North America
• 6 Territorial expansion
• 5 Technology
• 4 Economic conditions
• 4 Immigrants
• 4 Outlaws
• 4 Pioneers
• 3 Commerce
• 3 Wars
• 2 Cheyenne Indians
• 2 Criminals
• 2 Dwellings
• 2 Imperialism
• 2 Law enforcement
• 2 Photography
• 2 Politics and government
• 2 Power (Social sciences)
• 1 Acquisition of territory
• 1 Adventure and adventurers
• 1 American bison
• 1 Architecture
• 1 Asian Americans
• 1 Asians

• 26 Films Media Group
• 25 Films for the Humanities & Sciences (Firm)
• 17 Alexander Street Press
• 15 Infobase
• 12 History Channel (Television network)
• 12 New Video Group
• 11 A&E Television Networks, LLC
• 10 Arts and Entertainment Network
• 7 Public Broadcasting Service (U.S.)
• 5 Carradine, David
• 4 Greystone Communications
• 3 Carradine, Keith, 1949-
• 2 Amdahl, Eric
• 2 Campbell, Colin
• 2 Neely, Blake
• 2 Verklan, Laura M
• 1 A & E Home Video (Firm)
• 1 Annenberg Learner (Firm)
• 1 Bach, Joel
• 1 Blackwood Productions
• 1 CBS News
• 1 Center for Educational Telecommunications
• 1 Cohen, Douglas
• 1 Cowperthwaite, Gabriela
• 1 Ding, Loni

• 44 English

• 13 United States
• 2 Great Plains
• 2 Oklahoma
• 1 America
• 1 Badlands
• 1 Badlands (N.D.)
• 1 Deadwood (S.D.)
• 1 Lewis and Clark National Historic Trail
• 1 Navajo Nation, Arizona, New Mexico & Utah
• 1 North America
• 1 North Dakota
• 1 Texas
• 1 Transcontinental Railroad National Back Country Byway (Utah)
• 1 West United States

Limit year range