Independence Hall clock timing device

Chicago citation style
Independence Hall clock timing device. 1939-08-04. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/25140. (Accessed December 17, 2018.)
APA citation style
(1939-08-04) Independence Hall clock timing device. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/25140
MLA citation style
Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/25140>.
Note: These citations are programmatically generated and may be incomplete.