Note 122 — LETTER II
Reading edition
For Pierre's Hole (Peter's Valley) see Wyeth's Oregon, in our volume xxi, p. 63, note 41. Concerning the hostile and implacable character of the Blackfeet tribes consult Bradbury's Travels, in our volume v, p. 220, note 120; also Maximilian's Travels, in our volume xxiii, pp. 90-92.—Ed.