From a 1945 copy online of Statistics of Class 1 Motor Carriers from The Interstate Commerce Commission. This list represents the largest trucking companies based in the mid-western region of the United States based on annual revenues which are listed beside the name of the carrier. 1-Watson Bros. Transportation Co. Inc. $3,856,179 2-Denver-Chicago Trucking Co.… Continue reading The 18 Mid-Western Region Class 1 Motor Carriers In 1945