The Mrs. Robert Blackmore collection consists of 140 photographs dating from 1888 to 1938, including images of the Blackmore family and friends, the Standard and Midwest Oil Refineries, the Gothberg Ranch, and historical photographs of early buildings in Casper, Wyoming and various locations in Bessemer, Wyoming. The collection also includes letters, writings, genealogical information, scrapbook pages, news clippings, and various family documents.