Rogers, Matilda, 1894- Trees of the West : : identified at a glance / [electronic resource] / by Matilda Rogers ; photographs by Wynn Hammer ; foreword by Mildred E. Mathias.. — [Los Angeles] : Menlo Park, Calif. : : W. Ritchie Press ; : Distributed by Life Magazine & Book Co.,, c1966.. — 126 p. : : ill. (some col.) ; 18 cm.