Note 41 — OREGON EXPEDITION

The upper waters of the Colorado River are now usually termed Green River, from the "Rio Verte" of the Spaniards. This great stream rises on the western slopes of the Wind River Mountains; flowing nearly south, gathering many mountain streams, it next turns abruptly east into the northwest corner of Colorado, and having rounded the Uintah range trends to the south-southwest through Utah, until joined by Grand River, when it becomes the Colorado proper. The first attempt to navigate this formidable waterway was made by Ashley's party in 1825, although Becknell is known to have visited it the previous year. Consult Chittenden's Fur-Trade, ii, pp. 509, 778-781, and F. S. Dellenbaugh, Romance of the Colorado River (New York, 1902).—Ed.