Subjects: the river and i (sorted by popularity)
- Fishing -- England -- Tees River 64 downloads
- Aroostook River (Me. and N.B.) 64 downloads
- Hudson River Valley (N.Y. and N.J.) -- History 63 downloads
- Tennessee River Valley 63 downloads
- Mississippi River Valley -- History -- 1803-1865 62 downloads
- River life -- Juvenile fiction 61 downloads
- Danube River -- Juvenile fiction 60 downloads
- Smoky Hill River Valley (Colo. and Kan.) -- Pictorial works 60 downloads
- Red River Settlement -- Fiction 60 downloads
- Orinoco River Delta (Venezuela) -- Description and travel -- Juvenile fiction 58 downloads
- Paleontology -- Connecticut River Valley 58 downloads
- Footprints, Fossil -- Connecticut River Valley 58 downloads
- Yukon River Valley (Yukon and Alaska) -- Gold discoveries 57 downloads
- Madeira River (Brazil and Bolivia) -- Navigation 57 downloads
- Rhine River -- Juvenile fiction 56 downloads
- Palms -- Amazon River Valley 56 downloads
- Athabasca River Valley (Alta.) -- Fiction 56 downloads
- Wye, River (Wales and England) -- Poetry 55 downloads
- Ohio River -- Poetry 55 downloads
- James River (Va.) 55 downloads
- Mississippi River -- Discovery and exploration -- Juvenile fiction 54 downloads
- Saint Croix River (Wis. and Minn.) 54 downloads
- Potomac River 54 downloads
- Crystal River (Colo.) 54 downloads
- Hudson River Valley (N.Y. and N.J.) -- Social life and customs -- Juvenile fiction 53 downloads