This collection consists of a map drawn by the Geography Department of Mankato State University, in 1981. The map shows the locations of various ethnic groups in Blue Earth County in 1890. Nationalities included are: Irish, Swedish, French, German, Norwegian, and others. Also included in the collection is a paper explaining how the information used to construct this map was obtained.

This collection consists of a photocopied genealogy written by Rudolph F. Prael. This volume tells the history of the Dornberg family, of Blue Earth County, Minnesota. The genealogy begins with the emigration of the family patriarch from Germany to Minnesota in 1847, and continues until about 1941.