Books about Natural history -- Juvenile fiction (sorted by popularity)
- Among the Esquimaux; or, Adventures under the Arctic Circle Edward Sylvester Ellis 70 downloads
- Among the Red-skins; Or, Over the Rocky Mountains William Henry Giles Kingston 69 downloads
- In the Eastern Seas William Henry Giles Kingston 68 downloads
- Gulf and Glacier; or, The Percivals in Alaska Willis Boyd Allen 68 downloads
- Minnie's Pet Horse Madeline Leslie 68 downloads
- In Search of a Son William S. Walsh 67 downloads
- Kullankaivajat ja indiaanit: Kertomus Pohjois-Meksikosta (Finnish) Mayne Reid 66 downloads
- Adventures in the Far West William Henry Giles Kingston 66 downloads
- Minnie's Pet Cat Madeline Leslie 66 downloads
- The Frontier Fort William Henry Giles Kingston 66 downloads
- The Vee-Boers: A Tale of Adventure in Southern Africa Mayne Reid 66 downloads
- Red Rooney: The Last of the Crew R. M. Ballantyne 65 downloads
- Jack at Sea: All Work and No Play Made Him a Dull Boy George Manville Fenn 64 downloads
- The Crystal Hunters: A Boy's Adventures in the Higher Alps George Manville Fenn 64 downloads
- The Wreck of the Red Bird: A Story of the Carolina Coast George Cary Eggleston 64 downloads
- Shaggycoat: The Biography of a Beaver Clarence Hawkes 62 downloads
- Arthur Brown, The Young Captain Elijah Kellogg 62 downloads
- The history of a tame robin Anonymous 62 downloads
- Tales out of school Frank R. Stockton 62 downloads
- Across Texas Edward Sylvester Ellis 61 downloads
- The Coral Island: A Tale of the Pacific Ocean R. M. Ballantyne 61 downloads
- The Life of a Celebrated Buccaneer Richard Clynton 59 downloads
- Gascoyne, the Sandal-Wood Trader R. M. Ballantyne 58 downloads
- Born to Wander: A Boy's Book of Nomadic Adventures Gordon Stables 58 downloads
- Lion Ben of Elm Island Elijah Kellogg 58 downloads