Walter Camp interview with Charles H. Bischoff from the BYU Collection (MSS 57), no date, with my annotations in brackets. Thanks goes to Micheal O'Donnegan for this submission:
The Sergeant or Corporal who was [illegible - probably 'friendly'] to Rain in the Face at [Fort] Lincoln in 1874 [and was] killed with Custer and was the one [whose body was] at first put into Custer’s box by mistake when we took [the] remains of [the] Officers away in 1877.
By order we reburied Crittenden’s remains where they lay. We recognized them by his [illegible -- probably 'gold' or 'silver'] filled teeth.
Bischoff could tell me nothing whatever that regarded [the Little Big Horn battle of] 6/25[/1876] and evaded answering my questions as much as possible. I am of suspicion that he was not there on LBH. Said that Tom Custer was riding his (Bischoff’s) horse, his own (Custer’s) having [ a] sore back. This might be all true even if Bischoff was left at Powder River.
[Note: Sgt. Knipe refuted the claim that Capt. Custer rode Bischoff's horse to Walter Camp (Lilly Library Collection).]