Subjects: the river and i (sorted by popularity)
- Mackenzie River (N.W.T.) -- Description and travel 82 downloads
- Amazon River Valley -- Fiction 82 downloads
- Potomac River Valley -- Description and travel 82 downloads
- Yukon River Valley (Yukon and Alaska) -- Gold discoveries 80 downloads
- Niagara River (N.Y. and Ont.) 80 downloads
- Mississippi River Valley -- History -- To 1803 80 downloads
- Murray River (N.S.W.-S.A.) -- Description and travel 79 downloads
- Kinloch, Arthur, active 19th century -- Travel -- Australia -- Murray River (N.S.W.-S.A.) 79 downloads
- Murray River Region (N.S.W.-S.A.) -- Description and travel 79 downloads
- Avon, River (Leicestershire-Gloucestershire, England) 79 downloads
- Gambling on river boats -- Mississippi River -- History -- 19th century 77 downloads
- Gamblers -- Mississippi River -- Biography 77 downloads
- Gambling -- Mississippi River -- History -- 19th century 77 downloads
- Frontier and pioneer life -- Mississippi River 77 downloads
- Rivers -- Canada 76 downloads
- Yukon River Valley (Yukon and Alaska) -- Description and travel 76 downloads
- Wisconsin River (Wis.) 75 downloads
- Fox River (Wis. and Ill.) 75 downloads
- Orinoco River Delta (Venezuela) -- Description and travel -- Juvenile fiction 75 downloads
- Rock River (Wis. and Ill.) 75 downloads
- Paraguay River 75 downloads
- East River (N.Y.) -- Poetry 74 downloads
- Paddle steamers -- Mississippi River -- Drama 74 downloads
- Madeira River (Brazil and Bolivia) -- Navigation 74 downloads
- Mississippi River -- History -- Civil War, 1861-1865 74 downloads