Three boys

Chicago citation style
Three boys. 2017-12-11. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/knx_strug/id/508. (Accessed October 21, 2018.)
APA citation style
(2017-12-11) Three boys. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/knx_strug/id/508
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.carli.illinois.edu/cdm/ref/collection/knx_strug/id/508>.
Note: These citations are programmatically generated and may be incomplete.