Cite
Letter Governor James B. A. Robertson to Cyrus S. Avery, Tulsa, 1921 July 29
MLA
Robertson, James B. A., 1871-1938. "Letter Governor James B. A. Robertson to Cyrus S. Avery, Tulsa, 1921 July 29." Oklahoma. Department of Libraries. 1921-07-29, http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/184.
APA
Robertson, James B. A., 1871-1938 (1921-07-29). Letter Governor James B. A. Robertson to Cyrus S. Avery, Tulsa, 1921 July 29. Retrieved from http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/184
Chicago
Robertson, James B. A., 1871-1938. "Letter Governor James B. A. Robertson to Cyrus S. Avery, Tulsa, 1921 July 29." 1921-07-29. April 29, 2026. http://digitalprairie.ok.gov/cdm/ref/collection/race-riot/id/184.