Note 202 — Chapter VIII · {III}

Lewis and Clark passed the main ridge of the Rockies at the source of the west fork of Jefferson's River, coming out upon the Lemhi. By the "Great Gap," Farnham undoubtedly intends South Pass. The Bannock crossed at the headsprings of Henry's Fork of the Snake (see De Smet's Letters, our volume xxvii, p. 252), coming down into Madison Valley, whence they made their way by Bozeman's Pass to the Yellowstone, or country of the Crows; or possibly to the country of the Blackfeet, on Maria's River, by continuing down the Missouri.—Ed.