Subjects: State by State (sorted by popularity)
- Frontier and pioneer life -- United States 1144 downloads
- Working class -- United States 1143 downloads
- Folk music -- United States 1134 downloads
- United States. Army -- Military life 1127 downloads
- United States -- Politics and government -- 1845-1861 1123 downloads
- African Americans -- New York (State) -- New York -- Social conditions 1115 downloads
- African Americans -- Race identity -- New York (State) -- New York 1115 downloads
- African Americans -- New York (State) -- New York -- Social life and customs 1115 downloads
- United States -- Politics and government -- 1815-1861 1112 downloads
- United States -- Social life and customs 1097 downloads
- Criminals -- United States 1082 downloads
- United States -- History -- Civil War, 1861-1865 -- Biography 1080 downloads
- British -- New York (State) -- New York -- Fiction 1078 downloads
- Constitutional history -- United States 1075 downloads
- Slave trade -- United States -- History 1069 downloads
- Criticism -- United States 1059 downloads
- Literature and society -- United States 1059 downloads
- United States. Marine Corps -- History -- Korean War, 1950-1953 1047 downloads
- United States -- Discovery and exploration 1034 downloads
- Historians -- United States -- Biography 1027 downloads
- United States -- Census 1022 downloads
- Marriage customs and rites -- United States 1021 downloads
- Divorce -- United States 1021 downloads
- Fugitive slaves -- United States 1014 downloads
- World War, 1914-1918 -- United States -- Fiction 1001 downloads