C. Gregory Crampton (1911-1995) was a professor of history at the University of Utah for more than thirty years. He and his crews made thirteen trips down Glen Canyon identifying, documenting, and photographing the evidence of human experience there. He is the author of Standing Up Country, Land of Living Rock, and numerous other books on the history of the Southwest.
W. L. 'Bud' Rusho served as public affairs chief for the Glen Canyon Dam construction project, leading a team of U.S. Bureau of Reclamation photographers in the recording of the construction of Glen Canyon Dam. He is the author of Lee's Ferry: Desert River Crossing and The Wilderness Journals of Everett Reuss.
Philip Hyde (1921-2006) was a wilderness photographer and for many years the principle conservation photographer for the Sierra Club. His fifteen books include As Long as the Rivers Shall Run and Slickrock: The Canyon Country of Southeast Utah.