EnvironmentMechanical Aids in Loading and Unloading TrucksReducing to a Minimum the Idle Hours of a Commercial Motor VehicleBy John S. Harwhite on May 19, 1917AdvertisementABOUT THE AUTHOR(S)Recent Articles by John S. HarwhiteThe Truck TriangleKeeping the Cooling System HotAttacking the Motor's Mightiest Enemy