• 5 Industries
• 3 Immigrants
• 3 Labor
• 3 Politics and government
• 2 Economic history
• 2 Railroads
• 2 Reconstruction (U.S. history, 1865-1877)
• 2 World War, 1939-1945
• 1 Automobiles
• 1 Cotton
• 1 Democracy
• 1 Depressions
• 1 Economic aspects
• 1 Economic policy
• 1 Indians of North America
• 1 Lincoln, Abraham, 1809-1865
• 1 Logging
• 1 New Deal, 1933-1939
• 1 Pearl Harbor (Hawaii), Attack on, 1941
• 1 Petroleum industry and trade
• 1 Pioneers
• 1 Political activists
• 1 Politicians

• 7 History Channel (Television network)
• 6 Nutopia (Firm)
• 5 Films Media Group
• 5 Films for the Humanities & Sciences (Firm)
• 5 Schreiber, Liev
• 2 Ash, Jenny
• 1 Ackroyd, David
• 1 Alexander Street Press
• 1 Bartlett, Renny
• 1 Beavan, Clare
• 1 Chater, Andrew
• 1 Infobase
• 1 Milne, Marion
• 1 New Video Group
• 1 Webb, Danny

• 12 English

• 12 United States
• 1 Erie Canal (N.Y.)
• 1 Great Plains

• 6 Documentary television programs
• 6 Historical reenactments (Television programs)
• 6 Historical television programs
• 6 Internet videos
• 6 Nonfiction television programs
• 5 Educational films
• 5 Video recording
• 1 Biography

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