Subjects: the river and i (sorted by popularity)
- Mackenzie River (N.W.T.) -- Description and travel 71 downloads
- Ohio River Valley 70 downloads
- Mississippi River Valley 70 downloads
- Saint Lawrence River -- Description and travel 69 downloads
- Mimbres River Valley (N.M.) -- Antiquities 69 downloads
- Potomac River Valley -- Description and travel 69 downloads
- Penobscot River (Me.) 67 downloads
- Gambling -- Mississippi River -- History -- 19th century 67 downloads
- Loup River (Neb.) -- Fiction 67 downloads
- Gamblers -- Mississippi River -- Biography 67 downloads
- Platte River (Neb.) -- Fiction 67 downloads
- Gambling on river boats -- Mississippi River -- History -- 19th century 67 downloads
- Mississippi River Valley -- History -- To 1803 67 downloads
- Frontier and pioneer life -- Mississippi River 67 downloads
- Yukon River Valley (Yukon and Alaska) -- Description and travel 67 downloads
- Rhône River (Switzerland and France) 67 downloads
- Hudson River Region (N.Y. and N.J.) -- History 66 downloads
- Yangtze River (China) 65 downloads
- Boats and boating -- Colorado River (Colo.-Mexico) 65 downloads
- Yellowstone River 65 downloads
- Roanoke River Valley (Va. and N.C.) -- Fiction 65 downloads
- Boats and boating -- Green River (Wyo.-Utah) 65 downloads
- Geology -- Connecticut River Valley 65 downloads
- Fishes -- Kansas -- Wakarusa River 64 downloads
- Susquehanna River -- Juvenile fiction 64 downloads