Books about Natural history -- Juvenile fiction (sorted by popularity)
- Camp and Trail: A Story of the Maine Woods Isabel Hornibrook 124 downloads
- Black Ivory R. M. Ballantyne 122 downloads
- Down South; or, Yacht Adventure in Florida Oliver Optic 122 downloads
- The Swan and Her Crew G. Christopher Davies 121 downloads
- The Jungle Fugitives: A Tale of Life and Adventure in India Edward Sylvester Ellis 118 downloads
- Professor Johnny J. Ā. K. 116 downloads
- The Wanderers; Or, Adventures in the Wilds of Trinidad and Orinoco William Henry Giles Kingston 116 downloads
- On the Banks of the Amazon William Henry Giles Kingston 116 downloads
- The Crystal Hunters: A Boy's Adventures in the Higher Alps George Manville Fenn 115 downloads
- Minnie's Pet Monkey Madeline Leslie 115 downloads
- Afar in the Forest William Henry Giles Kingston 115 downloads
- The Wild Man of the West: A Tale of the Rocky Mountains R. M. Ballantyne 115 downloads
- Adventures in the Far West William Henry Giles Kingston 113 downloads
- The American family Robinson : or, The adventures of a family lost in the great desert of the West. D. W. Belisle 113 downloads
- Harry Milvaine; Or, The Wanderings of a Wayward Boy Gordon Stables 113 downloads
- Under the Great Bear Kirk Munroe 112 downloads
- Two Ways of Becoming a Hunter Harry Castlemon 112 downloads
- P. T. Barnum's Menagerie P. T. Barnum and Sarah J. Burke 112 downloads
- Tales out of school Frank R. Stockton 111 downloads
- Gulf and Glacier; or, The Percivals in Alaska Willis Boyd Allen 110 downloads
- The Golden Dream: Adventures in the Far West R. M. Ballantyne 110 downloads
- The Island Queen R. M. Ballantyne 110 downloads
- The Big Otter R. M. Ballantyne 108 downloads
- Red Rooney: The Last of the Crew R. M. Ballantyne 107 downloads
- Kullankaivajat ja indiaanit: Kertomus Pohjois-Meksikosta (Finnish) Mayne Reid 105 downloads