Collection of photographs that belonged to Mary A. Osborn ("Mrs. Theodore S. Mahan," later "Mrs. M. A. Osborn"). Theodore S. Mahan was resident of Adrian, Michigan and served in the 16th Michigan Infantry during the Civil War, Company D.
Portraits of Mr. and Mrs. Mahan, some of his associates in the 16th Michigan Infantry during the Civil War, and national political and military figures of the era.