Cite
Letter E. E. Hanson, by W. L. Coffey, undated
MLA
Hanson, E. E.. "Letter E. E. Hanson, by W. L. Coffey, undated." Oklahoma. Department of Libraries. 1921, http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/699.
APA
Hanson, E. E. (1921). Letter E. E. Hanson, by W. L. Coffey, undated. Retrieved from http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/699
Chicago
Hanson, E. E.. "Letter E. E. Hanson, by W. L. Coffey, undated." 1921. February 12, 2026. http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/699.