The collection is composed of financial documents, Board of Directors meetings-related documents, photographs, scrapbooks, and other miscellaneous business records for the Constance Brown Hearing Centers, located in Kalamazoo Michigan from 1941 to the present.

This collection is composed of material from the Four Township Water Resources Council ranging from 1975 to 2022. All material is relevant to the Kalamazoo River Watershed and the Four Townships of Prairieville, Barry, Richland, and Ross.

Narcotic reports and inventories for the Gillespie's Drug Stores in St. Joseph and Benton Harbor, Michigan from 1963 to 1976. Also includes controlled substances order forms, treasury department circulars, yearly narcotic inventories, miscellaneous inventory records, and wholesale dealers inventories.

The collection contains handbooks, lists, summaries of annual meetings, meeting invitations and minutes, treasurer’s reports, and annual reports belonging to the Southwestern Michigan Phi Beta Kappa Association.