Cite

Martin, Bert. "Letter Bert Martin, Attorney, Denver, Colorado to Governor James B. A. Robertson, 1921 July 14." Oklahoma. Department of Libraries. 1921-07-14, http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/228.

Martin, Bert (1921-07-14). Letter Bert Martin, Attorney, Denver, Colorado to Governor James B. A. Robertson, 1921 July 14. Retrieved from http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/228

Martin, Bert. "Letter Bert Martin, Attorney, Denver, Colorado to Governor James B. A. Robertson, 1921 July 14." 1921-07-14. August 3, 2025. http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/228.