Note 93 — LETTER I

The post visited by Father de Smet was Fort Van Buren, located on the south bank of the Yellowstone, at the mouth of the Rosebud. It was built in 1835 by A. J. Tulloch for the American Fur Company, and stood until 1842, when it was burned by instructions from Charles J. Larpenteur, who at once ordered the erection of Fort Alexander, on the north side of the Yellowstone, twenty miles higher up. De Smet was mistaken when he said that Fort Van Buren was the first fort of the Yellowstone erected by the American Fur Company. Fort Cass was built by A. J. Tulloch in 1832 at the mouth of the Big Horn, but three years later was abandoned. The fourth and last fort erected in this region by the American Fur Company was Fort Sarpy, on the south side of this river, twenty-five miles below the old site of Fort Cass. Consult Major Frederick T. Wilson, "Old Fort Pierre and its Neighbors," with editorial notes by Charles E. De Land, in South Dakota Hist. Colls. (Aberdeen, S. D., 1902), i, pp. 259-379.—Ed.