The collection includes a number of mineral maps of Gogebic and Ontonagon Counties in the Upper Peninsula of Michigan, three letterpress books of correspondence, an account book of the lands purchased in 1902, two lumber grading booklets, an 1880 land deed, the agreement between Rupp and Olson, some land redemption correspondence (1913 and 1915), and a large photograph of Bessemer, Michigan.

This collection consists of photographic negatives of Michigan geological features taken by L. Claire Hubert, on behalf of the Michigan Geological Survey. Listed on each negative sleeve is the type of geological feature, location (often including range numbers), the photographer (Hulbert), and the date taken. Some negative sleeves have additional information. There are also a few photographic prints in the collection.