Source: Fourth Annual Report of the Bureau of Ethnology. Smithsonian Institution. 1882-’83. Washington, 1886. Government Printing Office.
Page 90: ”The copy made by Lieutenant Reed was traced over a duplicate of the original, which latter was drawn on a buffalo robe by Lone-Dog, an aged Indian, belonging to the Yanktonai tribe of the Dakotas, who in the autumn of 1876 was near Fort Peck, Montana, and was reported to be still in his possession.”
Lone Dog
Fourth Annual Report of the Bureau of Ethnology. Smithsonian Institution. 1882-’83. Washington, 1886. Government Printing Office.