HAGUE, Arnold (1840-1917). Geology of the Yellowstone National Park. Part II. Descriptive geology, petrography, and paleontology... Washington, D.C.: Government Printing Office, 1899.
4to., (11 4/8 x 9 inches). 4 colour printed double-page geological sections, 4 colour printed maps, including 2 double-page, 113 plates, many double-page, and from photographs. Original maroon cloth, gilt (extremities rubbed).
Hague was one of five official geologists for the United States Geological Survey, and in 1883 Hague and his team, "...including geologist Walter Weed, physicist William Hallock, and chemist Frank Gooch, began to map and study the geology of more than 3,000 square miles in the decade-old Yellowstone National Park and adjacent areas of Wyoming and Montana. Hague focused his own investigations on the nature and origin of the park's geysers and hot springs, spending nine years in continuing and expanding work begun during the 1870s by federal geologist Albert Peale to include the forest-reserve areas west of the park. Hague also studied the Tertiary volcanic rocks at the north end of the Absaroka Range. He recognized that protecting the park's resources depended on the conservation of adjacent forests, watersheds, and wildlife. He recommended successfully in 1891 the establishment of the Yellowstone Forest reserve east and south of the park. Most of the results of the Yellowstone project appeared as the text (part 2, 1899) and 1:125,000-scale atlas (1904) of "Geology of the Yellowstone National Park" as "USGS Monograph 32".