Subjects: the river and i (sorted by popularity)
- Mississippi River -- Discovery and exploration 211 downloads
- River boats -- Fiction 209 downloads
- Colorado River (Colo.-Mexico) -- Juvenile fiction 204 downloads
- Red River Settlement 202 downloads
- Roosevelt River (Brazil) 198 downloads
- Missouri River -- History 192 downloads
- Steam-navigation -- Missouri River 192 downloads
- Ohio River Valley -- History -- To 1795 190 downloads
- Thwaites, Reuben Gold, 1853-1913 -- Travel -- Ohio River 188 downloads
- Skiffs -- Ohio River -- History -- 19th century 188 downloads
- Rivers -- Great Britain 186 downloads
- Yellowstone River Valley -- Fiction 183 downloads
- Animal sculpture -- Mississippi River Valley 178 downloads
- Mazaruni River (Guyana) 178 downloads
- Rhine River Valley -- Fiction 177 downloads
- Amazon River Valley 176 downloads
- Ohio River 176 downloads
- Rivers -- Fiction 176 downloads
- Yukon River (Yukon and Alaska) -- Description and travel 173 downloads
- Negro River (Río Negro, Argentina) 172 downloads
- Ohio River -- Juvenile fiction 171 downloads
- Rivers -- England 164 downloads
- Amazon River 163 downloads
- Nile River -- Description and travel 163 downloads
- Moselle River Valley 158 downloads