USGS Professional Paper 1456: This item is no longer available in print. A digital (pdf) version may be downloaded for free from the USGS website http://pubs.usgs.gov/pp/1456/ . We offer an unbound duplex B&W photocopy of it entitled; “The Geology and Remarkable Thermal Activity of Norris Geyser Basin, Yellowstone National Park, Wyoming” by Donald E. White, R. A. Hutchinson and T. E. C. Keith. Contains many photos of spectacular features (including many eruptions) and highly technical descriptions of the geology, hydrology and geothermal activity of Norris. 92 pages. Includes a 36”x42” geologic map of Norris’ thermal features. The digital map archive available for purchase includes this map among all the scanned maps.