Greyhound Bus ad card shaped like a bus and passengers

Front:
Greyhound Ŝ EOI OVER SCENICRUISER I AM NOW THIS IS HI IN. REALLY THE WAY TO TRAVEL. SMOOTH RIDING, AIR-CONDITIONED, FAST AND LUXURIOUS. 2071

Back:
MIRRO-KROME ® CARD BY H. S. CROCKER CO., INC., SAN FRANCISCO 1, CALIF. 10:DCFS-6 PUBLISHED BY SMITH NEWS CO., 1338 MISSION ST., S. F., CALIF.