Original vintage oil and gas magazine ad, WISCONSIN MOTOR CORPORATION, Milwaukee, WI. A Salute to Harley Sales Company Pioneers in the Introduction and Distribution of Air Cooled Engine Power for Oil Field Service! Roy O Neal, General Manager, Harry B. Neal, Secretary Treasure; Bob R. Neal, Chief Engineer; George E. Kluppel, Houston, TX Branch Manager. Air cooled engines. Old 1951 petroleum drilling industry advertisement.
Approximate size 9 x 12 inches.