Helen Kettering (foreground), ECC Biology instructor (1949 to 1966).

Chicago citation style
Helen Kettering (foreground), ECC Biology instructor (1949 to 1966).. Retrieved from the Digital Public Library of America, http://www.idaillinois.org/cdm/ref/collection/nelgincco01/id/751. (Accessed March 28, 2024.)
APA citation style
Helen Kettering (foreground), ECC Biology instructor (1949 to 1966).. Retrieved from the Digital Public Library of America, http://www.idaillinois.org/cdm/ref/collection/nelgincco01/id/751
MLA citation style
Retrieved from the Digital Public Library of America <http://www.idaillinois.org/cdm/ref/collection/nelgincco01/id/751>.
Note: These citations are programmatically generated and may be incomplete.