Forbush, E. H. 1939. Natural history of the birds of eastern and central North America. J. B. May (reviser). Houghton Mifflin Company, Boston, Massachusetts. 554 pp.

Tinbergen, N. 1939. The behavior of the snow bunting in spring. Trans. Linn. Soc. 5. 94 pp.

Bent, A. C. 1939a. CEOPHLOEUS PILEATUS PILEATUS (Linneaus). Southern pileated woodpecker. Pages 164-71 in A. C. Bent (editor). Life Histories of North American Woodpeckers. U.S. National Mueseum Bulletin, No. 174.

Pilsbry, H. A. 1939a-1948. Land Mollusca of North America (North of Mexico.) George W. Carpenter Fund for the Encouragement of Original Scientific Research, Philadelphia, Pennsylvania. 2107 pp.

Bent, A. C. 1939b. CEOPHLOEUS PILEATUS FLORIDANUS (Ridgway). Florida pileated woodpecker. Pages 189-91 in A. C. Bent (editor). Life Histories of North American Woodpeckers. U.S. National Museum Bulletin, No. 174.

Bent, A. C. 1939c. CEOPHLOEUS PILEATUS PICINUS (Bangs). Western pileated woodpecker. Pages 191-4 in A. C. Bent, Life Histories of North American Woodpeckers. U.S. National Museum Bulletin, No. 174.

Pope, C.H. 1939. Turtles of the United States and Canada. Alfred A. Knopf, New York. 343 pp.

Buss, I. O., and A. S. Hawkins. 1939. The upland plover at Faville Grove, Wisconsin. The Wilson Bulletin 51:202-20.

Hamerstrom, F. N. 1939. A study of Wisconsin's Prairie Chickens and Sharp-tailed Grouse. Wilson Bulletin 51:105-120.

Forbush, E. H. and J. B. May. 1939. Natural History of Birds of Eastern and Central North America. Houghton Mifflin Company, Boston.

Pilsbry, H.A. 1939. [Excerpts titled: Oreohelix pilsbryi and Oreohelix metcalfei florida] Land mollusca of North America (north of Mexico). Monograph. Acad. Nat. Sci., Philadelphia 3(I)1:513-514.

Wilcox, L. 1939. Notes on the life history of the piping plover. Pages 3-13 in The Birds of Long Island. Bird Club of Long Island, New York, New York.

Cottam, C. and P. Knappen. 1939. Food of some uncommon North American birds. Auk 56:138-169.

Wallace, G.J. 1939. Bicknell's thrush, taxonomy, distribution, and life history. Boston. 190 pp.

Pilsbry, H.A. 1939b. Land Mollusca of North America (North of Mexico). Volume 1, Part 1. Monograph of the Academy of Natural Sciences of Philadelphia 1(1): 1-573.

Hubbell, T.H. and C.C. Goff. 1939. Florida pocket gopher burrows and their arthropod inhabitants. Proceed. of the FL Academy of Science 4:127-166.

Walkinshaw, L. H. 1939. Notes on the nesting of the Clay-colored Sparrow. Wilson Bulletin 51:17-21.

Bent, A.C. 1939d. Life histories of North American woodpeckers, U.S. Nat'l. Mus. Bull. 174. Washington, D.C.

Christy, B. H. 1939. CEOPHLOEUS PILEATUS ABIETICOLA Bangs. Northern pileated woodpecker. Pages 171-89 in A. C. Bent (editor). Life Histories of North American Woodpeckers. U.S. National Museum Bulletin, No. 174.

Niedrach, R. J., and R. B. Rockwell. 1939. The birds of Denver and mountain parks. Denver Museum of Natural History Popular Series No. 5. 203 pp.

Pilsbry, H.A. 1939. Land mollusca of North America. The Academy of Nat. Sci. of Philadelphia Monographs. 3(I) 1:322.

Allen, A.A. 1939. Golden plover and other birds. 240 pp.

Ahrens, C. 1938. A list of dragonflies taken during the summer of 1936 in western United States (Odonata). Entomological News. 49:9-16.

Bennett, L.J. 1938. The blue-winged teal: its ecology and management. Ames, Iowa. 144pp.

Van der Schalie, H. 1938. The naiad fauna of the Huron River in southeastern Michigan. Miscellaneous Publication of the Museum of Zoology, University of Michigan 40:7-78.

Snyder, L.L., and C.E. Hope. 1938. A predator-prey relationship between the short-eared owl and the meadow mouse. Wilson Bulletin 50:110-112.

Whitfield, C.J and E.L. Beutner. 1938. Natural vegetation in the desert plains grassland. Ecology. 19(1):26-37.

Bradt, G. W. 1938. A study of beaver colonies in Michigan. Journal of Mammalogy 19:139-62.

Brewster, W. 1938. The birds of Lake Umbagog region of Maine, part 4. Compiled by Ludlow Griscom. Bull. Mus. Comp. Zool. 66:525-620.

Miller, R. R. 1938. Record of the fresh-water minnow APOCONE NEVADENSIS from southeastern California. Copeia 1938:147.

Sargent, W. D. 1938. Nest parasitism of hawks. Auk 55:82-84.

Dickey, D.R., and A.J. Van Rossem. 1938. The birds of El Salvador. Publ. Field Museum of Nat. His. Zool. Ser. 23:185-187.

Emerson, S. 1938. The genetics of self-incompatibility in Oenothera organensis. Genetics 23:190-202.

Bent, A. C. 1938. Life histories of North American birds of prey. Part 2. U.S. Nat. Mus. Bull. 170. 482 pp., 92 pls.

Witherby, H. F., F. C. R. Jourdain, N. F Tcehurst, and B. W. Tucker. 1938. The Handbook of British Birds. Volume 2: Warblers to Owls. H. F. and G. Witherby Ltd., London, United Kingdom. 352 pp.

Dixon, J. B. 1937. The golden eagle in San Diego County, California. Condor 39:49-56.

Stone, W. 1937. Bird studies at Old Cape May: an ornithology of coastal New Jersey. Dover Publ., New York.

Koster, W. J. 1937. The food of the sculpin (Cottidae) in central New York. Transactions of the American Fisheries Society. 66:374-382.

DuBois, A.D. 1937. The McCown Longspurs of a Montana prairie. Condor 39:233-238.

Hahn, H. W. 1937. Life history of the oven-bird in southern Michigan. Wilson Bulletin 49:145-237.

Hubbs, C. L. and E. R. Kuehne. 1937. A new fish of the genus Apocope from a Wyoming warm spring. Occasional Papers of the Museum of Zoology, University of Michigan 343:1-21.

Nicholson, D. J. 1937. Notes on the breeding of the ground dove in Florida. Wilson Bull. 49:101-114.

Bent, A.C. 1937. Life histories of North American birds of prey. Part 1. Bull. U.S. Natl. Mus. 137. 409 pp.

Voss, J.W. 1937. A revision of the Phacelia crenulata group for North America. Bulletin of the Torrey Club, 64: 81-144.

Britton, N.L., and J.N. Rose, 1937. The Cactaceae: Descriptions and illustations of the plants of the cactus family. Dover reprint edition: Two volumes. Dover Publications, Inc. New York.

Bagg, A. C., and S. A. Eliot, Jr. 1937. Birds of the Connecticut Valley in Massachusetts. The Hamphire Bookshop, Northampton, Massachusetts. 813 pp.

Grinnell, J., J. S. Dixon, and J. M. Linsdale. 1937. Furbearing mammals of California. University of California Press, Berkeley. 2 vols.

Linsdale, J.M. 1937. The natural history of magpies. Pacific Coast Avifauna, No. 25. 234 pp.

Griscom, L. 1937. A monographic study of the red crossbill. Proc. Boston Soc. Nat. Hist. 41:(5). 133 pp.

Barbour, T. 1937. A Pine Warbler killed by arsenical spray. Auk 54:542-43.

Cartwright, B.W., T.M. Shortt, and R.D. Harris. 1937. Baird's sparrow. Trans. Royal Canad. Inst. 21:153-197.

Walkinshaw, L.H. 1937. LeConte's Sparrow breeding in Michigan and South Dakota. Auk 54:309-320.

Davis, H. B. 1936. Life and work of Cyrus Guernsey Pringle. Univ. of Vermont, Burlington. 756 pp.

Errington, P. L., and F. N. Hammerstrom, Jr. 1936. The northern bob-white's winter territory. Iowa State Univ. Press. 141 pp.

Roberts, T. S. 1936. The birds of Minnesota. Volume 1. University of Minnesota Press, Minneapolis, Minnesota.

Stoner, D. 1936. Studies on the bank swallow RIPARIA RIPARIA (Linnaeus) in the Oneida Lake region. Roosevelt Wild Life Annals 4(2), 112 pp.

Cliff, E. P. 1936. The beaver, empire builder and conservationist. Utah Juniper 7:23-26.

Ellis, M.M. 1936. Erosion silt as a factor in aquatic environments. Ecology, 17: 29-42.

Henderson, J. 1936. Mollusca of Colorado, Utah, Montana, Idaho, and Wyoming, supplement. University of Colorado Studies, 23(2): 81-145.

DeGaris, C. F. 1936. Notes on six nests of the Kentucky warbler (OPORORNIS FORMOSUS). The Auk 53:418-28.