Dates: circa late 1860s-2019. Size: 15 linear feet in in 18 boxes and 4 oversize folders. Chicago Public Library, Sulzer Regional Library, Northside Neighborhood History Collection. This collection documents the Heidkamps, a large extended family with many members who lived and worked on Chicago's North Side, particularly in the Lincoln Square and Ravenswood neighborhoods. It contains correspondence and other documents, photographs of the family and community, and publications. [Finding Aid]