Gross, A.O. 1921. The Dickcissel (SPIZA AMERICANA) of the Illinois prairie. Auk 38:1-26, 163-184.

Urner, C.A. 1921. Short-eared owl nesting at Elizabeth, New Jersey. Auk 38:602-603.

Donaldson, A. L. 1921. A history of the Adirondacks. Volumes 1-2. Century Company, New York, New York.

Michael, C. W. 1921. Pileated woodpecker versus Cooper hawk. Condor 23:68.

Vanatta, E.G. 1921. Shells of Zion National Park, Utah. Nautilus 34:140-141.

Pennell, F.W. 1920. Scrophulariaceae of the central Rocky Mt states. Contrib U.S. Nat. Herb. 20:325-381.

Kennard, F.H. 1920. Notes on the breeding habits of the Rusty Blackbird in northern New England. Auk, 37:412-422.

Nelson, E. W. 1919. Annual report of chief of biological survey. Pp. 275-98 in Annual Reports of the Department of Agriculture for the Year Ended June 30, 1919.

Bent, A.C. 1919. Life histories of North American diving birds. U.S. Natl. Mus. Bull. 107. Washington, D.C.

Ridgway, R. 1919. The birds of North and Middle America. Part VIII. U.S. National Museum Bull. 50.

Phillip, P. B., and B. S. Bowdish. 1919. Further notes on New Brunswick birds. Auk 36:36-45.

Britton and Rose. 1919. The Cactaceae. 55p.

MacBride, J. F. and E. B. Payson. 1918. Annals of the Missouri Botanical Garden 5:150-151. 2 p.

Standley, P. C. 1918. Allioniaceae. North American Flora 21 (3): 171-254.

Beal, F. E. L. 1918. Food habits of the swallows, a family of valuable native birds. U. S. Department of Agriculture Bulletin 619.

Howell, A. H. 1918. Revision of the American flying squirrels. North American Fauna 44:1-64.

Chapman, F. M. 1917. The warblers of North America. D. Appleton-Century Co. Reprint edition 1968, Dover Publications, New York, New York.

Robinson, B.A. 1917. A monograph of the genus Brickellia. Memoirs of the Gray Herbarium 1: 1-155.

Ferriss, J.H. 1917. A shell hunt in the Black Range, with description of a new Oreohelix, The Nautilus. 30(9): 99-103.

Pilsbry, H.A. and J.H. Ferriss. 1917. Mollusca of the southwestern states. VIII. The Black Range, New Mexico. Proceedings of the Academy of Natural Sciences of Philadelphia 69:83-107.

Seale, A. 1917. The mosquito fish, Gambusia affinis (Baird and Girard) in the Phillippine Islands. Phillippine J. Sci. 12:177-87.

Bird, Henry. 1917. New species and histories in Papaipema (Lepidoptera) no. 19. Can. Ent. XLIX: pp. 120-128.

Hollister, N. 1916. A systematic account of the prairie-dogs. North American Fauna 40:1-37.

Pilsbry, H.A. 1916. New species of Amnicola from New Mexico and Utah. The Nautilus 29(10):111-112.

Bryant, H. C. 1916. Habits and food of the Roadrunner in California. University of California Publications in Zoology 17:21-58.

Millar, W. N. 1916. The big game of the Canadian Rockies. IN Commission of Conservation Canada, Conservation of Fish, Birds and Game. Methodist Book and Publishing House. Toronto, ON. 218pp.

Greenman, J.M. 1916. Monograph of the North and Central American species of the genus Senecio - part I. Annals of the Missouri Botanical Gardens. Vol 3, pg. 140-41.

Howell, A. H. 1915. Revision of the North American marmots. North American Fauna 37:1-80.

Ferriss, J.H. 1915. Our New Mexican expedition of 1914. The Nautilus. 28(10):107-113.

United States National Museum eds. 1915. Contribution from the United States National Herbarium. Govt. Printing Office, Wash, D.C.

Burns, F.L. 1915. The Cape May Warbler (DENDROICA TIGRINA) as an abundant autumnal migrant and as a destructive grape juice consumer at Berwyn, PA. Auk 32:231-233.

Gilman, M. F. 1915. A forty acre bird census at Sacaton, Arizona. Condor Vol. XVII:86-90

Burns, F. L. 1915. Comparative periods of depostion and incubation of some North American birds. Wilson Bulletin 27:275-86.

Kennedy, C.H. 1915. Notes on the Life History and Ecology of the Dragonflies (Odonata) of Central California and Nevada. Proc. U.S. Nat. Mus., vol. 52, no. 2192. pp. 483-635.

Jackson, H. H. T. 1915. A review of the American moles. North American Fauna 38:1-100.

Wooton, E.O., and P.C. Standley. 1915. Flora of New Mexico. Contributions from the U.S. National Herbarium No. 19. Washington, D.C. 794 pp.

Howard, A. D. 1915. Some exceptional cases of breeding among the Unionidae. The Nautilus 29:4-11.

Pilsbry, H.A. 1915. Oreohelix (Radiocentrum) hachetana. Proc Acad Nat Sci Phil 1915:330.

Kennedy, C.H. 1917. Notes on the Life History and Ecology of the Dragonflies (Odonata) of Central California and Nevada. Proceedings of the United States National Museum 52(2192):483-635, 404 figs. Online: https://doi.org/10.5479/si.00963801.52-2192.483

Wooten, E.O. and P.C. Standley. 1915. Flora of New Mexico. Contrib. to U.S. Nat. Herbarium. 19:1-794.

Howell, A. H. 1914. Revision of the American harvest mice (genus Reithrodontomys). North American Fauna 36:1-97.

Eaton, E. H. 1914. Birds of New York. Part 1. University of the State of New York, Albany, New York. State Museum Memoir 12. 501 pp.

Grinnell, J. 1914. An Account of the Birds and Mammals of the Lower Colorado Valley with Especial Reference to the Distributional Problems Presented. Univ. of Cal. Pub. In Zoology. Vol. 12, No. 4: 51-294. https://www.biodiversitylibrary.org/page/29524405

Ridgway, R. 1914. The birds of North and Middle America. Part VI. U.S. National Museum Bull. 50.

Gabrielson, I. N. 1914. Ten day's bird study in a Nebraska swamp. Wilson Bulletin. 87:51-68.

Griffiths, D. 1914. New species of Opuntia. Proceedings of Biological Society of Washington 27: 23-28.

Saunders, A.A. 1914. The birds of Teton and northern Lewis and Clark counties, Montana. Condor 16:124-144.

Eaton, E. H. 1914. Birds of New York. Part 2. Univ. of the State of New York, Albany.

Wooton, E.O. and P.C. Standley. 1913. New Plants from New Mexico. Contributions from the National Herbarium. Volume 16. No 4. 1 p.

Bailey, H. H. 1913. The Birds of Virginia. J. P. Bell Co., Inc., Lynchburg, Virginia. 362 pp.

Wooton, E.O., and P.C. Standley. 1913. Descriptions of new plants preliminary to a report on the flora of New Mexico. Contributions from the U.S. National Herbarium. 16(4):191.

Grinnell, J., and H. S. Swarth. 1913. An account of the birds and mammals of the San Jacinto area of southern California. University of California Publications in Zoology 10:197-406.

McAtee, W. L., and F. E. L. Beal. 1912. Some common game, aquatic, and rapacious birds in relation to man. USDA Farmers' Bull. 497. 30 pp.

Lefevre, G. and W. T. Curtis. 1912. Studies on the reproduction and artificial propagation of fresh-water mussels. Bulletin of the Bureau of Fisheries 30:102-201.

Sclater, W. L. 1912. A history of the birds of Colorado. Witherby and Company, London, England.

Beal, F. E. L. 1912. Food of our more important flycatchers. U.S. Department of Agriculture, Biological Survey Bulletin 44. 67 pp.

Forbush, E.H. 1912. A history of game birds, wild-fowl and shore birds of Massachusetts and adjacent states. Wright and Potter, Boston.

Hollister, N. 1911. A systematic synopsis of the muskrats. North American Fauna 32:1-47.

Wayne, A. T. 1910. Birds of South Carolina. Cont. Charleston Mus., no. 1.

Herrick, F.H. 1910. Life and behavior of the cuckoo. J. Exper. Zool. 9:169-233.