Note 4 — MEMORANDOM OF THE VOIGE BY LAND FROM FORT SMITH TO THE ROCKEY MOUNTAINS.
Reading edition
Illinois river, the largest tributary of the Arkansaw from the N. between Fort Smith and Fort Gibson: see Pike, ed. of 1895, p. 558, and add: “The Illinois is called by the Osages, Eng-wah-con-dah or Medicine-stone creek,” Long, ii, 1823, p. 255. Fowler crosses the Illinois some 6 or 8 m. from its confluence with the Arkansaw.