Katie Hennings, age 8, petting her dog "Old Sam" at the University District's Junior Grand Parade, Seattle, Washington, July 31, 1974

Chicago citation style
Wallen, Don, Unidentified. Katie Hennings, age 8, petting her dog "Old Sam" at the University District's Junior Grand Parade, Seattle, Washington, July 31, 1974. 1974. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/hupy/id/768. (Accessed June 21, 2018.)
APA citation style
Wallen, Don, Unidentified, (1974) Katie Hennings, age 8, petting her dog "Old Sam" at the University District's Junior Grand Parade, Seattle, Washington, July 31, 1974. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/hupy/id/768
MLA citation style
Wallen, Don, Unidentified. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/hupy/id/768>.
Note: These citations are programmatically generated and may be incomplete.