National Geographic : 1918 Dec
I- More Power THREE years ago we said that the Pierce- Arrow Car would not be changed for at least eighteen months not then except for a real improvement. We have kept both promises. Our engineers have developed the Dual Valve Engine-a six-cylinder en gine with greatly increased power power so flexibly applied that speeding up to seventy miles and slowing down to five on high gear are both possible. This new Pierce-Arrow has more power, more speed, greater flexibility, a quicker get-away, and needs less gear shifting, uses less gasoline and requires less cooling than any previous Pierce Arrow. Pierce-Arrow THE PIERCE-ARROW MOTOR CAR CO. BUFFALO, N. Y. "Mention the Geographic-It identifies you."