Sunset Rock, above the clouds, Lookout Mountain, Chattanooga, Tennessee postcard, undated

Chicago citation style
W.M. Cline Company. Sunset Rock, above the clouds, Lookout Mountain, Chattanooga, Tennessee postcard, undated. 1930. Retrieved from the Digital Public Library of America, http://cdm16877.contentdm.oclc.org/cdm/ref/collection/p16877coll12/id/452. (Accessed September 16, 2019.)
APA citation style
W.M. Cline Company, (1930) Sunset Rock, above the clouds, Lookout Mountain, Chattanooga, Tennessee postcard, undated. Retrieved from the Digital Public Library of America, http://cdm16877.contentdm.oclc.org/cdm/ref/collection/p16877coll12/id/452
MLA citation style
W.M. Cline Company. Retrieved from the Digital Public Library of America <http://cdm16877.contentdm.oclc.org/cdm/ref/collection/p16877coll12/id/452>.
Note: These citations are programmatically generated and may be incomplete.