Historic Preservation Organizations and Institutions includes both national and local organizations that Culver participated in at varying levels. Files are arranged alphabetically with further groupings for materials related to organizations in Michigan, the National Trust for Historic Preservation, and the Pioneer American Society. Given Culver's role in the Ann Arbor Historic District Commission one would expect to find more in this series of materials, but it is still a good representation of the function and role of the Historic District Commission in the city of Ann Arbor.