Reid, K. A. 1952. Effects of beavers on trout waters. Maryland Conserv. 29(4):21-23.

Stewart, P. A. 1952a. Dispersal, breeding behavior, and longevity of banded barn owls in North America. Auk 69:227-45.

Stewart, P. A. 1952b. Winter mortality of barn owls in central Ohio. Wilson Bulletin 64:164-6.

Williams, L. 1952b. Breeding behavior of the Brewer blackbird. Condor 54:3-47.

Bailey, J. E. 1952. Life history and ecology of the sculpin Cottus bairdi punctulatus in southwestern Montana. Copeia 1952(4):243-255.

Ingles, L. G. 1952. The ecology of the mountain pocket gopher, Thomomys monticola. Ecology 33:87-95.

Bowman, R. I. 1952. Chimney Swift banding at Kingston, Ontario from 1928-1947. Canadian Field-Naturalist 66:151-163.

Miles, V. I. et. al. 1952. Plague in Colorado and Texas. Part II, Rodent plague in the Texas South Plains 1947-1949 with ecological considerations. Public Health Monograph 6:41-53.

de Vos, A. 1952. Ecology and management of fisher and marten in Ontario. Tech. Bull. Ontario Dept. Lands For., Wildl. Ser. 1. 90 pp.

Conaway, C. H. 1952. Life history of the water shrew (Sorex palustris navigator). Am. Midl. Nat. 48:219-247.

Rose, E. T. and T. Moen. 1952. The increase in game fish populations in East Okoboji Lake, Iowa, following intensive removal of rough fish. Transactions American Fisheries Society. 82:104-114.

Daiber, F. C. 1952. The food and feeding relationships of freshwater drum, Apodinotus grunniens (Rafinesque), in western Lake Erie. Ohio Journal of Science 52(1):35-46.

Olson, S. T., and W. H. Marshall. 1952. The common loon in Minnesota. Minnesota Mus. Nat. Hist., Occas. Paper No. 5, University of Minnesota Press, Minneapolis, Minnesota.

Fitch, H.S., P. Goodrum and C. Newman. 1952. The armadilloin the southeastern U.S. Jour. Mamm. 33:21-37.

Allen, R.P. and M.M. Nice. 1952. A study of the breeding biology of the purple martin (PROGNE SUBIS). Amer. Midland- Nat. 47(3):606-65.

Barneby, R. C. 1952. Pugillus Astragalorum XIV: Notes on Sect. Lonchocarpi. Leaflets of Western Botany. 6(9): 172-176.

Hitchcock, A.S. 1951. Manual of the grasses of the United States. 2nd edition revised by Agnes Chase. [Reprinted, 1971, in 2 vols., by Dover Publications, Incorporated, New York.]

Kearney, T.H. and R.H. Peebles. 1951. Arizona flora. University of California Press, Berkeley.

Martin, A.C., H.S. Zim, and A.L. Nelson. 1951. American wildlife and plants: A guide to wildlife food habits. Dover Publications, Inc., New York, NY. 500 pp.

Murie, O. J. 1951. The elk of North America. Stackpole Company, Harrisburg, PA. 376 pp.

Robbins, W. W., M. K. Bellue, and W. S. Ball. 1951. Weeds of California. California Dept. Agric., Sacramento.

Stebbins, R. C. 1951. Amphibians of western North America. University of California Press, Berkeley. 539 pp.

Martin, A. C., H. S., Zim, and A. L. Nelson. 1951. American Wildlife and Plants, a Guide to Wildlife Food Habits, reprint edition. Dover Publications, Garden City, New York. 500 pp.

Wood, N. A. 1951. The birds of Michigan. University of Michigan, Ann Arbor, Museum of Zoology Miscellaneous Publication No. 75. 559pp.

Roe, F.G. 1951. The North American Buffalo. A Critical Studyof the Species in the Wild State. Univ. Toronto Press, Toronto. xi+991 pp.

Young, S.P. and H.H.T. Jackson. 1951. The clever coyote. Part l. its history, life habits, economic status and control. Part ll. classification of the races of the coyote.Wash. 411 pp.

Edmunds, G. F., Jr. 1951. New species of Utah mayflies. I. Oligoneuriidae (Ephemeroptera). Proc. Entomol. Soc. Wash. 53: 327-331.

Dement'ev, G. P., N. A. Gladkov, and E. P. Spangenber. 1951. Birds of the Soviet Union. Israel Prog. for Sci. Translations, Russian translation, Jerusalem, Israel.

Grasse, J. E. 1951. Beaver ecology and management in the Rockies. Journal of Forestry 49(1):3-6.

Hecht, W. R. 1951. Nesting of the marsh hawk at Delta, Manitoba. Wilson Bulletin 63:167-76.

Anthony, A. and D. Foreman. 1951. Observations on the reproductive cycle of the black-tailed prairie dog (CYNOMYS LUDOVICIANUS). Physiol. Zool. 24:242-8.

S51SPRSBNMUS, Legacy reference. Physical copy not yet located.

Bartholomew, G. A., and H. H. Caswell. 1951. Locomotion in kangaroo rats and its adaptive significance. Journal of Mammalogy 32:155-169.

Quimby, D.C. 1951. Life history and ecology of the jumping mouse, Zapus hudsonius. Ecol. Monogr. 21(1):61-95.

Hall, E.R. 1951. American Weasels. Univ. Kansas Publication, Museum Natural History, 4:1-466.

Davis, J. 1951. Distribution and variation of the brown towhee. Univ. California Publ. Zool., Berkeley.

Buss, I. O. 1951. The upland plover in southwestern Yukon Territory. Arctic 4:204-13.

Ross, H.H. 1951. The Trichoptera of lower California. Proceedings of the California Academy of Sciences 27(3): 65-76.

Hoyt, J. S. Y., and S. F. Hoyt. 1951. Age records of pileated woodpeckers. Bird-Banding 22:125.

Gould, F.W. 1951. Grasses of the Southwestern United States. University of Arizona Press, Tucson.

Hall, E. Raymond. 1951. American weasels. Univ. Kansas Publications, Museum of Natural History. 466 pp.

Eisenmann, E. 1951. Northern birds summering in Panama. Wilson Bull. 63:181-185.

Tordoff, H. B., and G. P. Young. 1951. Short-billed marsh wren breeding in Kansas. Wilson Bulletin 63:44.

Barbour, R. W. 1951. Observations on the breeding habits of the red-eyed towhee. American Midland Naturalist 45:672-678.

Vaurie, P. 1951. Six new subspecies of tiger beetles of the genus Cicindela and two corrections (Coleoptera:Cicindelidae). American Museum Novitates no. 1479.

Martin, A.C., H.S. Zim, and A.L. Nelson. 1951. American Wildlife and Plants. Dover Publications, Inc., NY.

Hanson, D.F. 1951. Biology of the white crappie in Illinois. Illinois Natural History Survey Bulletin 25(4):211-265.

Byers, E. 1951. Feeding behavior of young American bitterns. Wilson Bulletin. 63:334-6.

Pough, R. H. 1951. Audubon waterbird guide. Doubleday Company, Garden City, New York. 352 pp.

Smith, P. W. 1951. A new frog and a new turtle from the Western Illinois sand praries. Chicago Academy of Science Bulletin 9(10):189-9.

Dexter, R. W. 1951. Diary of five Chimney Swifts. Ohio Journal of Science 51:42-46.

Stewart, R. E. and J. W. Aldrich. 1951. Ecological studies of breeding bird populations in northern Maine. Ecology 33:226-238.

Kent, T. 1951. The least bitterns of Swan Lake. Iowa Bird Life 21:59-61.

Gould, F.W. 1951. Grasses of the Southwestern United States. University of Arizona Press, Tucson, Arizona.

Kearney, T.H., R.H. Peebles, and collaborators. 1951. Arizona flora. 2nd edition with Supplement (1960) by J.T. Howell, E. McClintock, and collaborators. Univ. California Press, Berkeley. 1085 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.

Fitch, F. W., Jr. 1950. Life history and ecology of the scissor-tailed flycatcher, MUSCIVORA FORFICATA. Auk 67:145-168.