Robert W. “Bob” Audretsch retired as a National Park Service ranger at Grand Canyon in 2009 after nearly 20 years of service. Since then, he has devoted himself full time to research and writing about the Civilian Conservations Corps (CCC). Bob grew up in Detroit, Michigan, and attended Wayne State University where he received a BA in history and a MS in library science. Bob has a lifelong interest in history, nature, books, and art and has written numerous publications in the fields of library science, sports, and history. Bob is the author of Grand Canyon’s Phantom Ranch (Arcadia Publishing, 2012), Shaping the Park and Saving the Boys: The Civilian Conservation Corps at Grand Canyon, 1933–1942 (Dog Ear Publishing, 2011), We Still Walk in Their Footprint: The Civilian Conservation Corps in Northern Arizona, 1933-1942 (Dog Ear Publishing, 2013), Selected Grand Canyon Area Hiking Routes, Including the Little Colorado River and Great Thumb (Dog Ear Publishing, 2014) and with Sharon E. Hunt The Civilian Conservation Corps in Arizona (Arcadia Publishing, 2014). And The Civilian Conservation Corps in Colorado, 1933-1942, Volume 1, U.S. Forest Service and Bureau of Indian Affairs Camps was published by Dog Ear Publishing in 2017. It was reviewed as “detailed,” “well-organized,” “readable” and the “definitive work on the Colorado CCC.” The Civilian Conservation Corps in Colorado, 1933-1942, Volume 2, U.S. Bureau of Reclamation, Division of Grazing Service, State Park and National Park Service Camps was published by Dog Ear Publishing in 2018. In addition he has published seven books of CCC enrollee names for family researchers with Create Space. His Arizona historical books have been reviewed as “meticulously researched” and “well-organized.” His future projects include a history of the CCC in Wyoming. He resides in Lakewood, Colorado.