The collection is composed of materials relating to the Kalamazoo Symphony Orchestra League. The collection contains minutes, financial documents, newsletters, photos, brochures, and other materials relating to the Kalamazoo Symphony Orchestra League. There are many brochures, booklets, pamphlets, mailers, and event fliers with differing sizes. Forty-six directories are housed within the collection. In addition, there are eleven scrapbooks that contain newspaper clippings, photographs and other items about the organization's activities.