A Forgotten Kingdom: The Spanish Frontier in Colorado and New Mexico, 1540-1821 BLM Cultural Resources Series (Colorado: No. 29)

Frederic J. Athearn is a life-long Colorado resident who was educated at the University of Colorado, Boulder, St. Louis University, and the University of Texas at Austin where he earned a Ph.D degree in Western American History. He taught at the University of Texas and the University of Colorado (Boulder and Denver) prior to becoming State Historian for the Colorado Bureau of Land Management in 1975. He is the author of two award-winning regional histories, several monographs, various professional articles, and dozens of book reviews.

Dr. Athearn currently serves as the Colorado State Office Cultural Resources Program Manager and State Historian. He also serves as Paleontology Program Manager and is the Areas of Critical Environmental Concern coordinator. His primary interests are in environmental history, regional history, and archival preservation of historic properties using photographic methods.