| Abbott, C. C.* | Days out of Doors |
| Baker, Sir S.* | Wild Beasts and their Ways |
| Baskett, J. N. | The Story of the Fishes |
| Baskett, J. N. | The Story of the Reptiles and Batrachians |
| Bates, W. H. | The Naturalist on the River Amazon |
| Beebe, W. C.* | The Bird |
| Bignell, Effie | A Quintette of Gray Coats (Squirrels) |
| Blatchley, W. S.* | A Nature Wooing |
| Bullen, F. T.* | Denizens of the Great Deep |
| Burroughs, John* | Squirrels and other Fur-bearers |
| Burroughs, John | Wake Robin |
| Chapman and Reed | Color Key to N. A. Birds |
| Comstock, J. H.* | Insect Life |
| Cram, W. E. | Little Beasts of Wood and Field |
| Damon, N. E. | Ocean Wonders |
| Darwin, Charles* | A Naturalist's Voyage |
| Eckstrom, Mrs. F. H.* | The Bird Book |
| Eggeling and Ehrenberg | The Fresh-Water Aquarium |
| Emerton, E. S. | Spiders |
| Gibson, W. H.* | Blossom Hosts and Insect Guests |
| Gibson, W. H. | Sharp Eyes |
| Holder, F. C.* | Along the Florida Reefs |
| Holland, W. J. | The Butterfly Book |
| Holland, W. J. | The Moth Book |
| Hornaday, W. T.* | American Natural History |
| Howard, L. O.* | The Insect Book |
| Hudson, W. H. | British Birds |
| Hudson, W. H. | Idle Days in Patagonia |
| Hudson, W. H. | The Naturalist in La Plata |
| Ingersoll, Ernest* | Life of Mammals |
| Ingersoll, Ernest | The Wit of the Wild |
| Ingersoll, Ernest | Wild Life of Orchard and Field |
| Kellogg, Vernon | American Insects |
| Keyser, L. S. | Birds of the Rockies |
| Lottridge, S. A. | Animal Snap Shots and How Made |
| Lucas, F. A. | Animals of the Past |
| Matthews, S.* | Familiar Life of the Roadside |
| Merriam, Florence* | A-birding on a Bronco |
| Miller, Mrs. O. T.* | Little Brothers of the Air |
| Morley, Mary W. | The Bee People |
| Morley, Mary W. | Wasps and their Ways |
| Oswald, Felix | Zoölogical Sketches |
| Packard, A. S. | Half-hours with Insects |
| Porter, J. H. | Wild Beasts |
| Reed, C. A. | North American Birds' Eggs |
| Robinson, R.* | New England Fields and Woods |
| Roosevelt, Theodore* | The Wilderness Hunter |
| Samuels, E. | Birds of New England |
| Scudder, S. H. | Everyday Butterflies |
| Sharpe, D. L.* | Wild Life near Home |
| Standard Library of Natural History | (5 vols.) |
| Standard (or Riverside) Natural History | (6 vols.) |
| Stone and Cram | American Animals |
| Todd, Ada J. | The Vacation Club |
| Torrey, B.* | Everyday Birds |
| Waterton, C.* | Wanderings in South America |
| White, Gilbert | Natural History of Selborne |
| Wilson, Alex | American Ornithology (Brewer's Edition) |
| Wood, J. G.* | Homes without Hands |
| Wright, Mrs. M. O.* | Bird-craft |
| Wright, Mrs. M. O. | Four-footed Americans |