• 5 History
• 3 Gold mines and mining
• 1 1840-1850
• 1 Discovery and exploration
• 1 Extension to the territories
• 1 Frontier and pioneer life
• 1 Gold
• 1 Industries
• 1 Manifest Destiny
• 1 Mexican War, 1846-1848
• 1 Politics and government
• 1 Polk, James K. (James Knox), 1795-1849
• 1 Scott, Winfield, 1786-1866
• 1 Slavery
• 1 Taylor, Zachary, 1784-1850
• 1 Territorial expansion
• 1 Van Buren, Martin, 1782-1862

• 1 Asylum Entertainment (Firm)
• 1 Burns, Ken, 1953-
• 1 Crash Course US History
• 1 Ehrenzweig, Michael
• 1 Green, John
• 1 HBO Home Entertainment (Firm)
• 1 Ives, Stephen
• 1 KQED-TV (Television station : San Francisco, Calif.)
• 1 Knowledgemotion Ltd.
• 1 Longsworth, Laura
• 1 MacLowry, Randall
• 1 March of Time, Inc
• 1 Murphy, Michael, 1938-
• 1 Public Broadcasting Service (U.S.)
• 1 Van Voorhis, Westbrook, 1903-1986
• 1 Yellow Jersey Films

• 6 English

• 2 United States
• 2 West (U.S.)
• 1 American River (Calif.)
• 1 San Francisco (Calif.)

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