George Billingsley Collection, 1877-2010.
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Billingsley, George
http://n2t.net/ark:/99166/w6w79m5d (person)
George Billingsley works as a geologist for the United States Geological Survey in Flagstaff Arizona. He is the author of numerous geological articles about the Colorado Plateau and the Grand Canyon. From the guide to the George Billingsley Collection, 1877-2010., (Cline Library. Special Collections and Archives Department.) ...