Hall, E.R. and K.R. Kelson. 1981. The mammals of North America. Ronald Press, N.Y. 1:xxx + 1-546 + 79.

Crellin, J. (1981) Unpublished Letter to Regional Forest, Subject: Environmental Assessment - Rio Grande Cutthroat Trout Restoration. Retrieved from Regional Office, USFS. 29 p.

Hatch, M.D. (1981) A Report Submitted to the United States Department of Interis, U.S Forest Service, Lincoln National Forest, Alamogordo, New Mexico. Project Title: A Survey of the Fishes of the Guadalupe Ranger District. Lincoln Supervisor's Office, Lin

Crawford, R. L. 1981. Bird casualties at a Leon county, Florida tv tower: a 25-year migration study. Bull. Tall Timbers Res. Sta., No. 22.

Cook, J.A. 1981. Distribution and numbers of white-sided jackrabbits (Lepus callotis) in the Animas Valley in summer 1981. Unpubl. manuscript from Museum of Southwestern Biology, University of NM, 7 pp.

Jacobs, R.W. (1981) Environmental Assessment on Rio Grande Cutthroat Trout Restoration. Retrieved from Regional Office, USFS. 17 p.

Pearce, P. A. and N. R. Garrity. 1981. Impact of aminocarb (Matacil) spraying on forest songbirds in northern New Brunswick. Canadian Wildlife Service, Progress Notes 121.

Forbes, G. S. 1981. Description and taxonomic implications of an unusual Arizona population of APODEMIA MORMO (Riodinidae). Jounal of the REsearch on the Lepidoptera 18:201-207.

Reynolds, T.D. 1981. Nesting of the Sage Thrasher, Sage Sparrow, and Brewer's Sparrow in southeastern Idaho. Condor 83:61-64.

Koppinger, D.G. 1981. Occurence map of Psoralea pentophylla. Arizona Natural Heritage Program. USFS.

Fitch, J.H., K.A. Shump, Jr., and A.U. Shump. 1981. Myotis velifer. Mammalian species 149:1-5.

O'Meara, T., J. Haufler, L. Stelter, and J. Nagy. 1981. Nongame wildlife responses to chaining of Pinyon-Juniper woodlands. Journal of Wildlife Management 45(2):381-389.

Facey, D.E. and G. Labar. 1981. Biology of American eels in Lake Champlain, Vermont. Transactions of the American Fisheries Society 110(3): 396-402.

King, B. 1981. The field identification of North American pipits. American Birds 35:778-88.

Williams, J. E., and G. R. Wilde. 1981. Taxonomic status and morphology of isolated populations of the White River springfish, Crenichthys baileyi (Cyprinodontidae). Southwestern Naturalist 25(4):485-503.

McCabe, T. L. 1981. The Dakota skipper, Hesperia dacotae (Skinner): range and biology, with special reference to North Dakota. Journal of the Lepidopterists' Society 35(3): 179-193.

Wallis, C.A., and C.R. Wershler. 1981. Status and breeding of Mountain Plovers (Charadrius montanus) in Canada. Canadian Field-Naturalist 95:133-136.

Peterson, F.F. 1981. Landforms of the basin & range province - defined for soil survey. Technical Bulletin 28. Nevada Agricultural Experiment Station, University of Nevada, Reno, Nevada

Mugaas, J. N., and J. R. King. 1981. Annual variation of daily energy expenditure by the black-billed magpie. Cooper Ornitholog. Soc. 78 pp.

Isely, D. 1981. Leguminosae of the United States. III. Subfamily Papilionoidae: Tribes Sophoreae, Podalyrieae, Loteae. Memoirs of the New York Botanical Garden 25(3): 1-264.

Knight, P.J. 1981. Status report - Astragalus humillimus. New Mexico State Heritage Program.

DeGraaf, R. M., G. M. Witman, and D. D. Rudis. 1981. Forest habitat for mammals of the northeast. NE Forest Experiment Station, Forest Service, U.S. Department of Agriculture, Amherst, Massachusetts.

Craig, R. J. 1981. Comparative ecology of the Louisiana and Northern Waterthrushes. Phd. Diss., Univ. of Connecticut, Storrs.

Johnson, A.R. 1981. Habitat utilization by Lark Buntings (CALAMOSPIZA MELANOCORYS) in a cold desert mixed shrub community. M.S. thesis. Brigham Young University, Provo, UT. 16 pp.

Ryan, M.R., J.J. Dinsmore, and R.B. Dahlgren. 1981. Ecology of Willets and Marbled Godwits in the glaciated prairie region. U.S. Fish and Wildlife Service, Northern Prairie Wildlife Research Center, Project 2170. 3 pp.

Greenberg, R. 1981. Frugivory in some migrant tropical forest wood warblers. Biotropica 13: 215-223.

Reynolds, R.P. 1981. Elevational record for Euderma maculatum (Chiroptera: Vespertilionidae) SW Nat 26:91-92.

Green, B.H., and H.D. Smith. 1981. Habitat utilization by sage sparrows in mixed desert shrub community. Abstract only. Encyclia 58:159.

Payne, N. F. 1981. Accuracy of aerial censusing for beaver colonies in Newfoundland. Journal of Wildlife Management 45:1014-1016.

Frest, T.J. and R.S. Rhodes, II. 1981. Oreohelix strigosa cooperi (Binney) in the Midwest Pleistocene. The Nautilus, 95: 47-55.

Lawson, R., and H. C. Dessauer. 1981. Electrophoretic evaluation of the colubrid genus ELAPHE Fitzinger. Isozyme Bull. 14:83.

Zammuto, R. M., E. C. Franks, and C. R. Preston. 1981. Factors associated with the interval between feeding visits in brood-rearing Chimney Swifts. Journal of Field Ornithology 52:134-139.

Merritt, J.F. 1981. Clethrionomys gapperi. Am. Soc. Mamm.,Mammalian Species No. 146. 9 pp.

Wentworth, T.R. 1981. Vegetation on limestone and granite in the Mule Mtn, Arizona. Ecology. 62(2):469-482.

Trautman, M. B. 1981. The fishes of Ohio. Second edition. Ohio State University Press, Columbus, Ohio. 782 pp.

Owen, J. B., D. S. Elsen and G. W. Russell. 1981. Distribution of fishes in North and South Dakota basins affected by the Garrison Diversion Unit. University of North Dakota Press, Grand Forks, North Dakota. 211 pp.

Iverson, J. B. 1981. Biosystematics of the Kinosternon hirtipes species group (Testudines: Kinosternidae). Tulane Stud. Zool. Bot. 23(1):1-74.

Knight, P.J. 1981. Unpublished report on Sclerocactus mesae-verdae. 47 pp.

U.S. Department of Commerce. 1981. 1978 census of agriculture. Volume 1, Part 46: Virginia state and county data. U.S. Department of Commerce, Washington, D.C. 691 pp.

Egbert, J. 1981. Field inventories in New Mexico of selected Gila Valley birds. May-June 1981.

Landye, J.J. 1981. Current status of endangered, threatened and/or rare molluscs of NM and AZ. Unpub report for Bureau of Sport Fisheries and Wildlife Office of Rare and Endangered Species [now U.S. FWS], Albuq, NM. 35 pp. CONTRACT #14-16-0002-80-227.

Bureau of Land Management. 1981. Hualapai-Aquarius management framework plan. Phoenix District, Pheonix, AZ.

U.S. Fish and Wildlife Service (USFWS). 1981. Determination of two New Mexico plants to be endangered species and threatened species, with critical habitat. Federal Register 46(12): 5730-5733.

Hafner, D. J., K. E. Petersen, and T. L. Yates. 1981. Evolutionary relationships of jumping mice (genus Zapus) of the southwestern United States. Journal of Mammalogy 62:501-512.

Roboski, J. C. and M. K. Causey. 1981. Incidence, habitat use, and chronology of woodcock nesting in Alabama. Journal of Wildlife Management 45:793-797.

Hammerquist-Wilson, M. N. and J. A. Crawford. 1981. Response of bobwhite to cover changes within three grazing systems. Jounal of Range Management 34:213-215.

Phillips, D. P., W. E. Childers, and G. S. Whitt. 1981. Management implications for different genetic stocks of largemouth bass (Micropterus salmoides) in the United States. Canadian Journal of Fisheries and Aquatic Sciences 38:1715-1723.

Freedman, B., C. Beauchamp, I. A. McLaren, and S. I. Tingley. 1981. Forestry management practices and populations of breeding birds in a hardwood forest in Nova Scotia. Canadian Field-Naturalist 95:307-311.

Matteson, S. W., and J. O. Riley. 1981. Distribution and nesting success of Zone-tailed Hawks in west Texas. Wilson Bulletin 107:719-723.

Day, J. C. U. 1981. Status of bitterns in Europe since 1976. British Birds. 74:10-6.

Morrison, M.L. 1981b. The structure of western warbler assemblages: analysis of foraging behavior and habitat selection in Oregon. Auk 98:578-588.

Vogt, R. C. 1981c. Natural history of amphibians and reptiles of Wisconsin. Milwaukee Public Museum. 205 pp.

Schwartz, C. W., and E. R. Schwartz. 1981. The wild mammals of Missouri. University of Missouri Press, Columbia. 356 pp.

Pyle, R.M., 1981. The Audubon Society Field Guide to North America Butterflies. Chanitcleer Press, Alfred A. Knopf, NY. 916 pp, 759 color figures.

Stevenson, J.S., J.R. Koplin, and C.E. Kennedy. 1981. Memo to Forest Supervisor from Jancie Stevenson, USFS Wildlife Management Biologist, regarding wildlife in the Bunk Robinson RARE II Area (Guadalupe Canyon). . 9 p.

Hector, D.P. 1981. The habitat, diet and foraging behavior of the Aplomado Falcon, FALCO FEMORALIS (Temminck). M.S. thesis, Oklahoma State University, Stillwater. 189 pp.

Limerick, S. 1981. Proposed rule for Penstemon alamosensis. Office of Endangered Species, U.S. Fish and Wildlife Service. Albuquerque, NM.

Faanes, C.A. 1981. Birds of the St. Croix River Valley: Minnesota and Wisconsin. North American Fauna 73. U.S. Fish and Wildlife Service, Washington, DC. 196 pp.

PNDMCI01NMUS, Legacy reference. Physical copy not yet located.

Taylor, D.W. 1981. Photographs of mollusc habitat taken on field survey in New Mexico.