Gary L. Roberts, Emeritus Professor of History, Abraham Baldwin College, Tifton, Georgia, respected historian of the American West and the Sand Creek massacre in particular, has published on a variety of topics related to frontier violence and Sand Creek in particular. He has consulted with the National Park Service, the Cheyenne and Arapaho Tribe of Oklahoma, the Northern Arapaho Tribe of Wyoming, the Northern Cheyenne Tribe of Montana, and the Rocky Mountain Annual Conference of The United Methodist Church concerning Sand Creek.