The collection consists mostly of business correspondence to/from Will Spencer, 1934-1938 (1.5 cubic ft. in Boxes 1-3). Will signed his letters as F.W. Spencer. The correspondence is in alphabetical order by surname or company name. Most of the correspondence is from Will to people who owned property in mid-Michigan inquiring if they would like to lease their land for gas/oil drilling to Phillips Drilling Company of Butler, Pennsylvania. Some of the correspondence is between Will and county officers about land that might be purchased for taxes, inquiries re: ownership of certain property, and requests to the Department of Natural Resources for plat maps. There are also some bills and receipts for maps or mapping. There are also occasionally requests to Spencer for some of his farm products. There is no personal correspondence in the collection.
Plat books in which specific properties are marked are found in Box 4 (.5 cubic ft.). Also in this box is a publication on Fringe Wells of the Crystal-New Haven Files and the Beaverton Area, 1936, by C. Roe.
Box 5 is miscellaneous materials and blank forms related top Michigan oil exploration and leasing. Of note are lists of properties owned by Native Americans in Denver and Isabella townships, Isabella County, which were available for oil or gas leases, 1934, 1936.
A family genealogy by Charles Spencer is found in the first folder of Box 1, Memories of the Spencer’s 100 Years in U.S.A, 1970.