Sheet M. Plan and Profile of Colorado River From Lees Ferry, Ariz., To Black Canyon, Ariz.-Nev., and Virgin River, Nev. 21 Sheets (14 plans, 7 profiles).

Sheet M. Plan and Profile of Colorado River From Lees Ferry, Ariz., To Black Canyon, Ariz.-Nev., and Virgin River, Nev.  21 Sheets (14 plans, 7 profiles).