Hopkins, M. (1863). Fruit in old age: A discourse, commemorative of Nathan Jackson, delivered by request of the students, in the chapel of Williams College, May 17, 1863. Boston: Press of T.R. Marvin.

Hopkins, Mark. Fruit in Old Age: A Discourse, Commemorative of Nathan Jackson, Delivered By Request of the Students, in the Chapel of Williams College, May 17, 1863. Boston: Press of T.R. Marvin, 1863.

Hopkins, Mark. Fruit in Old Age: A Discourse, Commemorative of Nathan Jackson, Delivered By Request of the Students, in the Chapel of Williams College, May 17, 1863. Boston: Press of T.R. Marvin, 1863.