Jack has been Professor of Geography at New Mexico State University in Las Cruces since 1990. He served on the NMLC Board of Directors from 2002 to 2012, and was Chair for nine years. Jack has consulted in the land trust field for 30 years and has designed more than 100 conservation easements in New Mexico, Colorado, Wyoming and Montana. His 1993 book, Rocky Mountain Divide: Selling and Saving the West was awarded the J.B. Jackson Prize of the Association of American Geographers and other awards. He is the co-author of Saving the Ranch: Conservation Easement Design in the American West (2004) with another former NMLC Board member, Anthony Anella.