- "California as I Saw It": First-Person Narratives of California's Early Years, 1849-1900
- California Gold: Northern California Folk Music from the Thirties Collected by Sidney Robertson Cowell
- The Capital and the Bay: Narratives of Washington and the Chesapeake Bay Region, 1600-1925
- Captain Pearl R. Nye: Life on the Ohio and Erie Canal
- A Century of Lawmaking for a New Nation: U.S. Congressional Documents and Debates, 1774-1875
- Chicago Anarchists on Trial: Evidence from the Haymarket Affair, 1886-1887
- The Chinese in California, 1850-1925
- The Church in the Southern Black Community, 1780-1925
- Civil War Maps
- A Civil War Soldier in the Wild Cat Regiment : selections from the Tilton C. Reynolds Papers
- Civil War Treasures from the New-York Historical Society
- Creative Americans: Portraits by Carl Van Vechten, 1932-1964