Subjects: the river and i (sorted by popularity)
- Rhine River -- Fiction 711 downloads
- Thames River (England) 667 downloads
- Rhine River Valley -- Description and travel 664 downloads
- Klondike River Valley (Yukon) -- Gold discoveries 609 downloads
- Yukon River Valley (Yukon and Alaska) -- Fiction 539 downloads
- Yukon River Valley (Yukon and Alaska) -- Poetry 517 downloads
- Niger River 505 downloads
- Rivers -- Juvenile fiction 504 downloads
- Ohio River Valley -- Fiction 484 downloads
- Congo River -- Description and travel 479 downloads
- Colorado River (Colo.-Mexico) 471 downloads
- Nile River Valley -- Description and travel 470 downloads
- Amazon River -- Description and travel 397 downloads
- Gambia River -- Description and travel 386 downloads
- Legends -- Rhine River Valley 362 downloads
- Hudson River (N.Y. and N.J.) -- Juvenile fiction 354 downloads
- Ohio River Valley -- Description and travel 337 downloads
- Indians of South America -- Amazon River Valley 332 downloads
- Hugo, Victor, 1802-1885 -- Travel -- Rhine River Valley 328 downloads
- Rivers 326 downloads
- Mississippi River Valley -- History 324 downloads
- Amazon River Valley -- Description and travel 315 downloads
- Stones River, Battle of, Murfreesboro, Tenn., 1862-1863 303 downloads
- Columbia River 301 downloads
- Rivers -- Juvenile literature 301 downloads