The collection includes correspondence, papers, publications, photographs, and ephemera that provide insight into John E. Potzger’s pioneering work in pollen studies and postglacial forest succession and his career with Butler’s Botany Department. The collection also contributes to an understanding of Potzger’s career as a teacher in a Lutheran day school, his music studies, his membership in such organizations as the Association of Science and Mathematics Teachers, Phi Kappa Phi, the Nature Conservancy, and Ecological Society of America. Pamphlet boxes (four) contain a number of reprints of articles by Potzger and other scientists and teaching aids. Photographs include those of Potzger in the field, Potzger during his days at Emmaus Lutheran day school, and family and friends.