Note II'-38 — Chapter II · ITINERARY, CONTINUED: THROUGH OLD MEXICO, IN CHIHUAHUA, DURANGO, AND COAHUILA, TO THE PRESIDIO GRANDE, MARCH 22D-MAY 31ST, 1807.
Reading edition
Route about N., 15-20 m. to the foot of the pass in the cross mountain, at the place marked "Rivera" on Pike's map.