Known for its sunshine and sandy beaches filled with bathing beauties and musclemen, Southern California is a Mediterranean-climate haven for winter-weary Americans from Michigan to Maine. But for those with a hankering for winter sports, one could scarcely ignore the snowcapped peaks of Mount Baldy and San Gorgonio shimmering in the bright California sunshine. By the 1930s, skiing was all the rage, with the towns of Big Pines, Lake Arrowhead, and...