Northwest Portland Cement Company quarry, Grotto, ca. 1929

Chicago citation style
Pickett, Lee. Northwest Portland Cement Company quarry, Grotto, ca. 1929. ca. 1929. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/pickett/id/1445. (Accessed June 20, 2018.)
APA citation style
Pickett, Lee, (ca. 1929) Northwest Portland Cement Company quarry, Grotto, ca. 1929. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/pickett/id/1445
MLA citation style
Pickett, Lee. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/pickett/id/1445>.
Note: These citations are programmatically generated and may be incomplete.