Johnston Gym [1] b&w postcard, Geneva College, Beaver Falls, Pa.

Chicago citation style
Johnston Gym [1] b&w postcard, Geneva College, Beaver Falls, Pa.. 1911. Retrieved from the Digital Public Library of America, http://digitalcollections.powerlibrary.org/cdm/ref/collection/agene-pcard/id/19. (Accessed December 15, 2018.)
APA citation style
(1911) Johnston Gym [1] b&w postcard, Geneva College, Beaver Falls, Pa.. Retrieved from the Digital Public Library of America, http://digitalcollections.powerlibrary.org/cdm/ref/collection/agene-pcard/id/19
MLA citation style
Retrieved from the Digital Public Library of America <http://digitalcollections.powerlibrary.org/cdm/ref/collection/agene-pcard/id/19>.
Note: These citations are programmatically generated and may be incomplete.