The collection is comprised of negatives and prints of vegetation types and landscape scenes taken by Robert R. Humphrey between 1949 and 1963. The collection also contains some reproduction photographs from “Views of the Monuments and Characteristic ...
castanoe - 2021-12-09 15:09
This collection consists of professional correspondence, research files and publication files of paleoecologist and geoscientist Dr. Paul S. Martin, Emeritus Professor of Geosciences at the University of Arizona. Collection also includes material relating ...
castanoe - 2022-03-01 13:04