Samuel F. Tappan papers relating to the Sand Creek Massacre, 1867-1953 (bulk 1867-1913).

Manuscript and typescript carbon letters, clippings and other documents relating to the Massacre at Sand Creek, Colorado. Included in the papers is a holograph manuscript draft of a letter to the editor of the New York Times dated July 26, 1897, in which Tappan corrects statements made in the newspaper regarding the massacre; an undated typescript carbon letter to an unidentified recipient in which Tappan discusses the military commission that investigated the massacre; a photocopy of a notarized statement dated June 1, 1957, by Frank M. Wynkoop which describes a meeting with the commander of the Sand Creek troops, Colonel John M. Chivington; a photocopy of a broadside entitled The Indian Question; a clipping of Tappan's letter to the editor of the New York Tribune dated September 16, 1867, regarding the "origins of the Indian War"; and newspaper clippings relating to the Massacre and Tappan obituary notices