- Canines: An entry from UXL's <i>UXL Encyclopedia of Science</i>
- Reintroduction of the Mexican wolf within its historic range in the southwestern United States : final environmental impact statement (SuDoc I 1.98:W 83/2) by U.S. Geological Survey, 1996
- Eastern timber wolf: (Canis lupus lycaon) (Life tracks) by Richard P Thiel, 1993
- An Historical look at the Mexican gray wolf (Canis lupus baileyi) in early Arizona territory and since statehood ;: A review of available documentation and personal records by Dan Miles Gish, 1977
- The wolf in Washington : crying wolf (SuDoc I 49.2:W 83/5) by U.S. Dept of Interior, 1994
- A key to identifying timber wolf sign by Richard P Thiel, 1983
- Decade of the Wolf: Returning the Wild to Yellowstone by Douglas W. Smith, Gary Ferguson, 2006-11-01
- The Lobo Outback Funeral Home by Dave Foreman, 2004-02
- The Mexican wolf: Biology, history, and prospects for reestablishment in New Mexico by James C Bednarz, 1988
- Northern Rocky Mountain Gray Wolf Restoration Act of 1990 : hearing before the Subcommittee on Public Lands, National Parks, and Forests of the Committee ... 19, 1990 (SuDoc Y 4.En 2:S.hrg.101-983)
- Status, Conservation Needs and Reintroduction of the Wolf (Canis Lupus) in the Council of Europe Member States (Nature & Environment) by Council of Europe, 1991-04
- Once A Wolf: How Wildlife Biologists Fought to Bring Back the Gray Wolf by Stephen Swinburne, 2001-02-26
- Reading About the Gray Wolf (Friends in Danger) by Carol Greene, 1993-06
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