Unknown

Chicago citation style
Zahn, Frank G., 1925-2008. Unknown. 1952-09. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p16002coll26/id/4012. (Accessed September 19, 2018.)
APA citation style
Zahn, Frank G., 1925-2008, (1952-09) Unknown. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p16002coll26/id/4012
MLA citation style
Zahn, Frank G., 1925-2008. Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p16002coll26/id/4012>.
Note: These citations are programmatically generated and may be incomplete.