Clayton, P. 1991. Field survey to Ball Ranch - Stop #17 on 2 Aug 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #31 29 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-Blanco stop #5 on 8 May 1991.

Sherry, T. W., and R. T. Holmes. 1991. Population age structure of long-distance migratory passerine birds: variation in time and space. Acta XX Congressus Internationalis Ornithologici.

Britton, B. 1991. Unpublished plant element occurrence record for Allium gooddingii in BS Canyon, Sept. 1988. + map.

Henry, A. 1991. Unpub. letter to Pat Mehlhop regarding Aplomado Falcon sightings on the Gray Ranch. February 15, 1991.

Painter, C.W. 1991. Letter from Charlie Painter, Endangered Species biologist for NM Dept. Game and Fish to Pat Mehlhop of NMNHP dated 4 Sept. 1991 regarding Sceloporus scalaris localities in Hidalgo Co. 1 pp.

Sullivan, R.M. 1991. Live trapping of potential habitat for the meadow jumping mouse (Zapus hudsonius luteus) at the San Jose drain outfall area. Preliminary environmental report submitted to the Marron/Taschek/Knight Corporation.

Rinne, J. L. and W. L. Minckley. 1991. Native fishes of arid lands: A dwindling resource of the desert southwest. U.S. Department of Agriculture, Forest Service, General Technical Report RM-206. Rocky Mountain Forest and Range Experiment Station, Fort Col

Bestgen, K. R., and S. P. Platania. 1991. Status and conservation of the Rio Grande silvery minnow, Hybognathus amarus. Southwestern Naturalist 36:225-232.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #15 on 29 July 1991.

Clark, D. R., Jr., and C. M. Bunck. 1991. Trends in North American small mammals found in common barn-owl (TYTO ALBA) dietary studies. Can. J. Zool. 69:3093-3102.

Fleischer, R. C., S. I. Rothstein, and L. S. Miller. 1991. Mitochondrial DNA variation indicates gene flow across a zone of known secondary contact between two subspecies of the brown-headed cowbird. Condor 93:185-189.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #9 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area- ACEC Area #12 on 25 April 1991.

Stoltz, J., and J. Schnell (eds.). 1991. Trout: The Wildlife Series. Stackpole Books, Harrisburg, Pennsylvania. 384 pp.

Kraus, F., and M. M. Miyamoto. 1991. Rapid cladogenesis among the pecoran ruminants: evidence from mitochondrial DNA sequences. Systematic Zoology 40:117-130.

Mayden, R. L., W. J. Rainboth, and D. G. Buth. 1991. Phylogenetic systematics of the cyprinid genera Mylopharodon and Ptychocheilus: comparative morphometry. Copeia 1991:819-834.

Anderson, J. (1991) Map of Red Canyon MSO Survey # 2. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Rogers, M. A. 1991a. Evolutionary differentiation within the northern Great Basin pocket gopher, Thomomys townsendii. I. Morphological variation. Great Basin Nat. 51:109-126.

DeBow, M.J. 1991. Letter to Jennifer Fowler-Propst of US Fish and Wildlife Service concerning discovery of two Pediocactus papracanthus. 16 Oct 1991.

Mills, Scott G. 1991. Miscellaneous notes on Coryphantha scheeri robustrispina. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.30.

The Nature Conservancy. Dec 9 1991. Addendum: Site Prospectus: Natural Land Protection Act, site identification program, presented to Natural Lands Protection Committee.

Grooms, S., and D. Peterson. 1991. Bluebirds! NorthWord Press, Inc. 160 pp.

Black, C. 1991. Bird observations on the Gray Ranch, Hidalgo Co., New Mexico. Compiled for the Nature Conservancy. 10 p.

Hevron, B. Oct 1 1991. Results of survey for: Erigeron acomanus, Proatriplex pleiantha and monitoring study of Astragalus humillimus on the Navajo Nation. Unpublished report for EMNRD by Navajo Natural Heritage Program.

Paton, P. W. C., and T. C. Edwards, Jr. 1991. Nesting ecology of the snowy plover at Great Salt Lake, Utah--1991 breeding season. Progress Report, Contract No. 90-2028, Utah Cooperative Fish and Wildlife Research Unit, Utah State University, Logan. 28 pp.

Weizling, R. 1991. Known site monitoring form for Ipomopsis sancti-spiritus. 6 p.

Clayton, P. 1991. Field survey to Ball Ranch - Stop #4 on 22 July 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-plot #4 on 24 April 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #12 on 23 May 1991.

DeBruin, E. 1991. Field survey to Fort Stanton ACEC - Stop #10 23 May, 1991.

DeBruin, E. 1991. Field survey to Farmington Resource Area-east fork Kutz Canyon-stop #5 on 22 April 1991.

Horton, J. and C. Persichetty. 1991. Field survey to Capitan Mts. - Pierce Canyon Arroyo at Forest Rd. 57, 23 May 1991.

Adams, D. A. and J. S. Hammond. 1991. Changes in forest vegetation, bird, and small mammal populations at Mount Mitchell, North Carolina--1959/62 and 1985. Journal of the Elisha Mitchell Scientific Society 107:3-12.

Castrale, J. S. 1991. Eastern woodland buteos. Pages 50- 9 in Proceedings of Midwest Raptor Management Symposium and Workshop 27 Feb - 1 Mar 1989, Chicago, Illinois. National Wildlife Federation Scientific and Technical Series No. 15.

Dittmann, D. L., and R. M. Zink. 1991. Mitochondrial DNA variation among phalaropes and allies. Auk 108:771-779.

Holway, D. A. 1991. Nest-site selection and the importance of nest concealment in the black-throated blue warbler. Condor 93:575-581.

Lincoln National Forest. 1991. Maps of exclosures to protect Cirsium vinaceum, Lincoln NF, Alamagordo, NM.

Parren, S. G. 1991. Evaluation of nest-box sites selected by eastern bluebirds, tree swallows, and house wrens. Wildl. Soc. Bull. 19:270-277.

Schmutz, J.K. 1991b. Age-related differences in reproductive success among Ferruginous and Swainson's hawks in Alberta. Journal of Raptor Research 25:160.

Wayne, R. K., et al. 1991. Conservation genetics of the endangered Isle Royale gray wolf. Conservation Biology 5(1)41-

Allen, D. H. 1991. An insert technique for constructing artificial red-cockaded woodpecker cavities. General Technical Report SE-73. U.S. Department of Agriculture, Southeastern Forest Experimental Station, Asheville, North Carolina.

Anderson, J. (1991) 1991 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 2 p.

Gila National Forest. 1991. Goshawk data base update.

Marsh, P.C. 1991. Spikedace Meda fulgida recovery plan. Unpub report for U.S. Fish and Wildlife Dept, Albuquerque, NM 37 pp.

Unknown. (1991) Intensive Water Quality Survey of Tributaries to the Red River: Cabresto, Columbine, Pioneer, Mellette and Goose Creeks in Taos County, New Mexico, April 1-4, 1991. Carson Supervisor's Office, Carson National Forest, USFS.

Belant, J. L., and J. F. Olson. 1991. Chick fostering by common loons, GAVIA IMMER. Can. Field-Nat. 105:406-407.

Dessauer, H. C., and C. J. Cole. 1991. Genetics of whiptail lizards (Reptilia: Teiidae: Cnemidophorus) in a hybrid zone in southwestern New Mexico. Copeia 1991:622-637.

Hellgren, E. C., M. R. Vaughan, and D. F. Stauffer. 1991. Macrohabitat use by black bears in a southeastern wetland. J. Wildlife Management 55:442-448.

Lehmkuhl, J.F., L.F. Ruggiero, and P.A. Hall. 1991. Landscape-scale patterns of forest fragmentation and wildlife richness and abundance in the southern Washington Cascade Range. Pages 425-442 in L.F. Ruggiero, K.B. Aubry, A.B. Carey and M.H. Huff, techni

Peterson, A. T. 1991. Geographic variation in the ontogeny of beak coloration of gray-breasted jays (APHELOCOMA ULTRAMARINA). Condor 93:448-452.

Snell, R. R. 1991a. Interspecific allozyme differentiation among North Atlantic white-headed larid gulls. Auk 108:319-328.

Todsen, T. 1991. Notes from telephone conversation between Tom Todsen and Ellen DeBruin concerning Limosella Pubiflora at Gray Ranch HQ Cienega on 12 Nov 1991.

Collins, C. T., W. A. Schew, and E. Burkett. 1991. Elegant terns breeding in Orange County, California. Am. Birds 45:393-395.

Knight, P. and A. Cully. 1991. A new species of Astragalus (Fabaceae) from southeastern New Mexico. Southwestern Nat. 36(2):198-200. June 1991.

Noss, R. F. 1991. Effects of edge and internal patchiness on avian habitat use in an old-growth Florida hammock. Natural Areas Journal 11:34-47.

Schmutz, J.K. 1991a. Population dynamics of Ferruginous Hawks in Alberta. Pages 212-214 in G.L. Holroyd, G. Burns, and H.C. Smith, editors. Proceedings of the second endangered species and prairie conservation workshop. Natural History Occasional Paper 15

S91SPELCNMUS, Legacy reference. Physical copy not yet located.

Ownbey, G. B., and T. Morley. 1991. Vascular plants of Minnesota: A checklist and atlas. University of Minnesota Press, Minneapolis.