Letter from James K. Polk to Dr. Isaac J. Thomas

Chicago citation style
Letter from James K. Polk to Dr. Isaac J. Thomas. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll18/id/1084. (Accessed October 15, 2018.)
APA citation style
Letter from James K. Polk to Dr. Isaac J. Thomas. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll18/id/1084
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll18/id/1084>.
Note: These citations are programmatically generated and may be incomplete.