- Red Wolves (Endangered Plants and Animals of North America) by Christopher Butz, 2003-09
- An evaluation of the ecological potential of White Sands Missile Range to support a reintroduced population of Mexican wolves (Endangered species report) by James C Bednarz, 1989
- Wisconsin timber wolf population monitoring, March 31, 1995-June 31, 1996 (Wisconsin endangered resources report) by Adrian P Wydeven, 1997
- Status of the timber wolf in Wisconsin: Performance report, 1 July 1993 to 30 June 1994 (Wisconsin endangered resources report) by Adrian P Wydeven, 1994
- Wolf recovery plan environmental assessment, 1988 (Wisconsin endangered resources report) by Richard P Thiel, 1989
- Status of the timber wolf in Wisconsin: Performance report, 1 July 1994 to 30 June 1995 (Wisconsin endangered resources report) by Adrian P Wydeven, 1995
- Status of the timber wolf in Wisconsin: Performance report, 1 July 1995 through 30 June 1996 (Wisconsin endangered resources report) by Adrian P Wydeven, 1996
- Status of the timber wolf in Wisconsin: Performance report, 1 July 1996 through 30 June 1997 (Wisconsin endangered resources report) by Adrian P Wydeven, 1997
- Status of the timber wolf in Wisconsin: Performance report, 1 July 1997 through 30 June 1998 (Wisconsin endangered resources report) by Adrian P Wydeven, 1998
- Status of the timber wolf in Wisconsin: Performance report, 1 July 1989 to 30 June 1990 (Wisconsin endangered resources report) by Adrian P Wydeven, 1992
- Endangered Red Wolves by U.S. Fish and Wildlife Service, 1997
- Recovery of the timber wolf, 1987-88 (Wisconsin endangered resources report) by Richard P Thiel, 1989
- Recovery of the timber wolf, 1986-87 (Wisconsin endangered resources report) by Richard P Thiel, 1989
- Status of the timber wolf, 1985-86 (Wisconsin endangered resources report) by Richard P Thiel, 1989
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