Classroom in Old Main

Chicago citation style
L. A. Phelps. Classroom in Old Main. circa 1900. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/sic_photos/id/2724. (Accessed December 11, 2018.)
APA citation style
L. A. Phelps, (circa 1900) Classroom in Old Main. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/sic_photos/id/2724
MLA citation style
L. A. Phelps. Retrieved from the Digital Public Library of America <http://collections.carli.illinois.edu/cdm/ref/collection/sic_photos/id/2724>.
Note: These citations are programmatically generated and may be incomplete.