Front cover image for The U.S. Geological Survey in the early 1900s : reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins

The U.S. Geological Survey in the early 1900s : reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins

D. F. Hewett, Adolph Knopf, Frank C. Calkins, M. F. Diggles, Geological Survey (U.S.)
A CD containing reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins
Computer File, English, 1998
The Survey ; For sale by the USGS Information Services, [Menlo Park, Calif.], Denver, CO, 1998