National Geographic : 1915 Jul
The Lincoln Highway when completed will be 3,000 miles long. You can make the round trip of 6,000 miles on Kelly-Springfield Tires and be covered every mile of the way by the liberal Kelly Springfield mileage basis of adjustment. Not that it's likely you will ever need to think about adjustments; for it is a plain statement of fact that in 1914, ninety-nine per cent of all Kelly°pr inrgfield tires sold gave their full mileage on the road,without the slightest necessity for adjustment. In the rare instances where adjust ments are required they are made on this basis: Plain tread, 5,000 miles. Kant Slip tread, 6,000 miles. In Ford sizes, plain tread, 6,000 miles. Kant Slip tread, 7,500 miles. Kelly-Springfield Tire Company Akron, Ohio Branches in all Principal Cities "Mention the Geographic-It identifies you."