Don Grybeck slides; 1955-2006.HMC-1172. Don Grybeck is a geological engineer who taught economic geology, structural geology, mineralogy, and the geology of Alaska at UAF and worked as a geologist with the United States Geological Survey(USGS) branch in Alaska. The collection contains photographs, which depict geological fieldwork in Alaska, prospectors, mining equipment, towns near fieldwork sites, and rock formations.