Slevin, J. R. 1950. A remarkable concentration of desert snakes. Herpetologica 6:12-13.

Lee, L. 1950. Kill analysis for the lesser prairie chicken in New Mexico, 1949. Journal of Wildlife Management 14:475-477.

Hershkovitz, P. 1950. Mammals of northern Colombia. Preliminary report no. 6: Rabbits (Leporidae), with notes on the classification and distribution of the South American forms. Proceedings of the United States National Museum 100:327-375.

Bent, A.C. 1950. Life histories of North American wagtails, shrikes, vireos, and their allies. U.S. Natl. Mus. Bull. 197. Washington, D.C.

Stroud, C. P. 1950. A survey of the insects of the White Sands National Monument, Tularosa Basin, New Mexico. American Midland Naturalist. 44:659-677.

LaRivers, Ira. 1950. The meeting point of Ambrysus and Pelocoris in Nevada. Pan-Pacific Ent. XXVI(1): pp. 91-21.

Wilde, S. A., C. T. Youngberg, and H. H. Hovind. 1950. Changes in composition of ground water, soil fertility, and forest growth produced by the construction and removal of beaver dams. Journal of Wildlife Management 14:123-128.

Coconino National Forest. 1950. Report on the Establishment of the G.A. Pearson Natural Area. US Forest Service, 19 p.

Allan, P. F. 1950. Scissor-tailed flycatcher, MUSCIVORA FORFICATA, feeding at night. Auk 67:517.

Campbell, H. 1950. Quail picking up lead shot. Journal of Wildlife Management 14:243-244.

Grasse, J. E., and E. F. Putnam. 1950. Beaver management and ecology in Wyoming. Wyoming Game and Fish Commission, Bulletin 6. 52 pp.

Campbell, H. 1950. Note on the behavior of marsh hawks towards lesser prairie chickens. Journal of Wildlife Management 14:477-478.

Chenoweth, W. L. 1950. Records of amphibians and reptiles from New Mexico, Utah, and Arizona. Transactions of the Kansas Academy of Science. 53(4):532-534.

Hoyt, J. S. Y. 1950. Nine years' experience in keeping the pileated woodpecker in captivity. Aviculture 20:41-6.

Correll, D.S. 1950. Native Orchids of North America North of Mexico. Chronica Botanica Company, Waltham, MA. 393 p.

Griscom, L. 1949. The Birds of Concord. Harvard Univeristy Press, Cambridge, Massachusetts. 340 pp.

Osborn, B. and P. F. Allan. 1949. Vegetation of an abandoned prairie dog town in tallgrass prairie. Ecology 30:322-32.

Howell, J.T. 1949. Marin flora: Manual of the flowering plants and ferns of Marin County, California. 1st edition. Univ. Calif. Press, Berkeley.

George, J.L., and W.H. Stickel. 1949. Wildlife effects of DDT dust used for tick control on a Texas prairie. American Midland Naturalist 42:228-237.

Shapiro, J. 1949. Ecological and life history notes on the porcupine in the Adirondacks. J. Mamm. 30:247-257.

Sutton, G. M. 1949. Studies of the nesting birds of the Edwin S. George Reserve. Part I: the vireos. Museum of Zoology, University of Michigan, Miscellaneous Publication, No. 74. University of Michigan Press, Ann Arbor, Michigan.

Pough, R.H. 1949. Audubon land bird guide, small land birds of eastern and central North America from southern Texas to central Greenland. Doubleday and Company, Incorporated, Garden City, N.Y.

Reynolds, H. G., and H. S. Haskell. 1949. Life history notes on Price and Bailey pocket mice of southern Arizona. Journal of Mammalogy 30:150-156.

Sigler, W.F. 1949. Life history of the white bass, Lepibema chrysops (Rafinesque), of Spirit Lake, Iowa. Iowa State College of Agriculture and Mechanic Arts, Research Bulletin 366:203-244.

Roberts, T.S. 1949. Manual for the identification of the birds of Minnesota and neighboring states. University of Minnesota Press, Minneapolis. 738 pp.

Walkinshaw, L.H. 1949. Twenty-five eggs apparently laid by a cowbird. Wilson Bulletin 61:82-85.

Walkinshaw, L. 1949. The sandhill cranes. Cranbrook Institute of Science. 1949. 202 pp.

Threinen, C. W. 1949. An analysis and appraisal of the roughfish problem of Wisconsin. Investigational Report, No. 715, Division of Fish Management, Wisconsin Conservation Department. 19 pp.

Hammond, M. C., and C. J. Henry. 1949. Success of marsh hawk nests in North Dakota. Auk 66:271-4.

Stewart, R. E. 1949. Ecology of a nesting red-shouldered hawk population. Wilson Bull. 61:26-35.

Thorp, J. 1949. Effects of certain animals that live in soils. Scientific Monthly 68:180-91.

Bent, A. C. 1949. Life histories of North American thrushes, kinglets, and their allies. U. S. Nat. Mus. Bull.196. 452 pp., 51 pls.

Palmer, R. S. 1949. Maine Birds. Bulletin of the Museum of Comparative Zoology at Harvard College, Vol. 102. 656 pp.

Chander, H. P. 1949. A new Stenelmis from Nevada (Coleoptera: Elmidae). Pan-Pacific Entomologist 25(3)133-136.

Swank, W. E. 1949. Beaver ecology and management in West Virginia. Conserv. Comp. WV. 65pp.

LaRivers, Ira. 1949. A new subspecies of Stenelmis from Nevada. Proceedings of the Entomological Society of Washington 51:218-224.

Sutton, G.M. 1949. The Rose-throated Becard, PLATYPSARIS AGLAIAE, in the Lower Rio Grande Valley of Texas. Auk 66(4):365-366.

Rand, A.L. 1948. Birds of southern Alberta. National Museum of Canada, Bulletin 111.

Pickwell, G. 1948. Barn owl growth and behaviorisms. Auk 65:359-73.

Phillips, A. R. 1948. Geographic variation in Empidonax traillii. Auk 65:507-514.

Pilsbry, H.A. 1948. Land Mollusca of North America (north of Mexico). Monograph of the Academy of Natural Sciences of Philadelphia, 2(2): 521-1113.

Grange, W. B. 1948. Wisconsin grouse problems. Wisconsin Department of Conservation, Madison, Wisconsin.

Crabb, W. D. 1948. The ecology and management of the prairie spotted skunk in Iowa. Ecological Monographs 18:201-232.

Crooks, M.P. 1948. Life history of the Field Sparrow, SPIZELLA PUSILLA PUSILLA (Wilson). M.S. thesis. Iowa State College, Ames, IA. 109 pp.

Dence. W. A. 1948. Life history, ecology, and habits of the dwarf sucker, Catostomus commersoni utawana (Mather), at the Huntington Wildlife Station. Roosevelt Wildlife Bulletin 8(4):81-150.

Tyler, W. M. 1948. Red-breasted Nuthatch. Pages 22-35 IN A. C. Bent, editor. Life histories of North American nuthatches, wrens, thrashers, and their allies. u. S. National Museum Bulletin 195.

Wynd, F. L., G. P. Steinbauer, and N. R. Diaz. 1948. Arundo donax as a forage grass in sandy soils. Lloydia 11(3):181-184.

Miller, R. R. and R. G. Miller. 1948. The contribution of the Columbia River system to the fish fauna of Nevada: five species unrecorded from the state. Copeia. 1952:174-87.

Bailey, R.M. and H.M. Harrison, Jr. 1948. Food habits of thesouthern channel catfish, Ictalurus lacustris punctatus, in the Des Moines River, Iowa. Transactions of the American Fisheries Society 75:110-138.

Tinkham, E.R. 1948. Faunistic and ecological studies on the Orthoptera of the Big Bend region of Trans-Pecos, Texas. American Midland Naturalist 40: 521-663.

Chamberlain, E. B. 1948. Ecological factors influencing the growth and management of certain waterfowl food plants on Back Bay National Wildlife Refuge. Transactions North American Wildlife Conference. 13:347-56.

Woodbury, A. M. and R. Hardy. 1948. Studies of the desert tortoise, Gopherus agassizii. Ecological Monographs. 18(2):145-200.

Bent, A.C. 1948. Life histories of North American nuthatches, wrens, thrashers, and their allies. U.S. National Museum Bulletin 195. Washington, DC.

Dalquest. W. W. 1948. Mammals of Washington. University of Kansas Museum Natural History Publ. 2:1-444.

Wallace, G.J. 1948. The barn owl in Michigan, its distribution, natural history, and food habits. Michigan State College Agricutlral Exp. Sta., Tech. Bull. 208, East Lansing, Michigan. 61 pp.

Miller, R. R. 1948. The cyprinodont fishes of the Death Valley system of eastern California and southwestern Nevada. University of Michigan Museum of Zoology, Miscellaneous Publications 68:1-155.

Koford, C. B., and M. R. Koford. 1948. Breeding colonies of bats, Pipistrellus hesperus and Myotis subulatus melanorhinus. Journal of Mammalogy 29:417-418.

Buckalew, J. H. 1948. Pied-billed grebe escapes duck hawk. Wood Thrush 4:59.

Einarsen, A. S. 1948. The pronghorn antelope and its management. Wildlife Management Inst., Washington, D.C. 235 pp.

Kurmholz, L. A. 1948. Reproduction in the western mosquitofish, Gambusia affinis affinis (Baird and Girard), and its use in mosquito control. Ecological Monographs 18:1-43.