Swimmers, possibly in a swimming pool on the Olympic Peninsula, date unknown

Chicago citation style
Swimmers, possibly in a swimming pool on the Olympic Peninsula, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/632. (Accessed June 22, 2018.)
APA citation style
Swimmers, possibly in a swimming pool on the Olympic Peninsula, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/632
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/632>.
Note: These citations are programmatically generated and may be incomplete.