Greg Hobbs received his history degree from Notre Dame (1966), served in the Peace Corps with his wife, Bobbie, in Colombia and holds a law degree from California, Berkeley (1971). Law Clerk to U.S. Circuit Judge William E. Doyle in Denver, he then practiced environmental, natural resources, land use and transportation law with Region VIII of the U.S. Environmental Protection Agency; the Colorado Attorney General's office; Davis, Graham and Stubbs; and Hobbs, Trout and Raley. His clients in private practice included the Northern Colorado Water Conservancy District. Justice of the Colorado Supreme Court from May 1, 1996 to August 31, 2015, he currently serves as a Senior Water Judge and co-directs the University of Denver Law School's environmental and natural resources program. He is a board member of Water Education Colorado. Michael Welsh has taught history since 1990 at the University of Northern Colorado. He has written manuscripts for several National Park Service sites, the most recent being A Different Frontier: Mexico, America, and Big Bend National Park (University of Nevada Press, 2020). He also has written book-length studies of the U.S. Army Corps of Engineers, in particular their districts in Albuquerque, New Mexico, and San Francisco, California, and their regional headquarters in San Francisco (the South Pacific Division). The most recent of these studies is A Mission in the Desert: The US Army Corps of Engineers, Albuquerque District: 1985-2010 (U.S. Government Publishing Office, 2015).