Subjects: the river and i (sorted by popularity)
- Rhine River -- Fiction 724 downloads
- Rhine River Valley -- Description and travel 698 downloads
- Thames River (England) 684 downloads
- Klondike River Valley (Yukon) -- Gold discoveries 613 downloads
- Yukon River Valley (Yukon and Alaska) -- Fiction 566 downloads
- Yukon River Valley (Yukon and Alaska) -- Poetry 550 downloads
- Rivers -- Juvenile fiction 537 downloads
- Niger River 534 downloads
- Congo River -- Description and travel 506 downloads
- Ohio River Valley -- Fiction 502 downloads
- Colorado River (Colo.-Mexico) 475 downloads
- Nile River Valley -- Description and travel 474 downloads
- Amazon River -- Description and travel 433 downloads
- Gambia River -- Description and travel 390 downloads
- Hudson River (N.Y. and N.J.) -- Juvenile fiction 384 downloads
- Legends -- Rhine River Valley 376 downloads
- Hugo, Victor, 1802-1885 -- Travel -- Rhine River Valley 357 downloads
- Indians of South America -- Amazon River Valley 346 downloads
- Amazon River Valley -- Description and travel 344 downloads
- Mississippi River Valley -- History 343 downloads
- Ohio River Valley -- Description and travel 327 downloads
- Rivers 325 downloads
- Frontier and pioneer life -- Yukon River Valley (Yukon and Alaska) -- Fiction 324 downloads
- Rivers -- Juvenile literature 324 downloads
- Stones River, Battle of, Murfreesboro, Tenn., 1862-1863 318 downloads