Note 154 — Chapter XXII · SECOND RESIDENCE AT FORT UNION, FROM SEPTEMBER 29TH TO OCTOBER 30TH

For William Soublette see our volume xix, p. 221, note 55 (Gregg). The fort named for him was on the site of the military post of Fort Buford, about two miles below the mouth of Yellowstone River, on the north bank of the Missouri. The site was chosen and building begun by Campbell's party (August 29, 1833), who had come thither from the Green River rendezvous via the Bighorn and Yellowstone. The post was only maintained until the following June, when its owners sold out to the American Fur Company. See full details in Larpenteur's Journal, pp. 51-67. For a time this place was a dependency of Fort Union; but in 1842 was re-established by a new firm as Fort Mortimer. Audubon visited it frequently during his journey of 1843. Two years later the American Fur Company again bought out the opposition. Remains of old Fort William existed until the building of the military post of Fort Buford (1866).—Ed.