back of card: CAJON PASS Cajon Pass (Spanish for Box). Highway 66 follows the Old Spanish Trail that has been the road to the coast from the desert country for nearly a century. William Wolfskill blazed the Spanish Trail from Santa Fe, New Mexico to Los Angeles in 1831. The first American to enter California by this trail was Jedediah Smith who entered in 1826 and again in 1827. Smiths expedition did for the Southwest what Lewis and Clark did for the Northwest. Today a freeway follows the old trail in part . . M. P.