スプリングフィールドM1866
The Bozeman Trail: Historical Accounts of the Blazing of the Overland Routes, Volume II, by Grace Raymond Hebard, et al. digitized at https://books.google.co.jp/books?id=Jc8BAAAAMAAJ&redir_esc=y&hl=ja – participant reports for Wagon Box Fight and Hayfield Fight.
"The .58 and .50 Caliber Rifles and Carbines of the Springfield Armory" by Richard A. Hosmer, Published by North Cape Publications, May 2006