Books about Natural history -- Juvenile fiction (sorted by popularity)
- Jungle and Stream; Or, The Adventures of Two Boys in Siam George Manville Fenn 53 downloads
- The Lost Mountain: A Tale of Sonora Mayne Reid 53 downloads
- Minnie's Pet Lamb Madeline Leslie 53 downloads
- Minnie's Pet Horse Madeline Leslie 52 downloads
- Professor Johnny J. Ā. K. 52 downloads
- Gulf and Glacier; or, The Percivals in Alaska Willis Boyd Allen 51 downloads
- In the Eastern Seas William Henry Giles Kingston 51 downloads
- The Wreck of the Red Bird: A Story of the Carolina Coast George Cary Eggleston 51 downloads
- On the Banks of the Amazon William Henry Giles Kingston 51 downloads
- The history of a tame robin Anonymous 50 downloads
- Among the Esquimaux; or, Adventures under the Arctic Circle Edward Sylvester Ellis 50 downloads
- Bertha's Visit to Her Uncle in England; vol. 2 [of 3] Mrs. Marcet 50 downloads
- Wild Adventures round the Pole Gordon Stables 49 downloads
- Captain Mugford: Our Salt and Fresh Water Tutors William Henry Giles Kingston 49 downloads
- Fighting the Whales R. M. Ballantyne 49 downloads
- The Rajah of Dah George Manville Fenn 49 downloads
- Minnie's Pet Parrot Madeline Leslie 48 downloads
- The Life of a Celebrated Buccaneer Richard Clynton 47 downloads
- Bertha's Visit to Her Uncle in England; vol. 1 [of 3] Mrs. Marcet 47 downloads
- Ungava R. M. Ballantyne 47 downloads
- The White Czar: A Story of a Polar Bear Clarence Hawkes 46 downloads
- Born to Wander: A Boy's Book of Nomadic Adventures Gordon Stables 46 downloads
- Fritz and Eric John C. Hutcheson 45 downloads
- A Boy's Trip Across the Plains Laura Preston 44 downloads
- The Hunter Cats of Connorloa Helen Hunt Jackson 44 downloads