ON THE COVER
Post office employees begin sorting mail in a Railway Post Office even before the train leaves the station and continue while the car is en route.
This Southern Railway Post Office car is one of the 2,500 such cars American railways provide to help speed the delivery of mail by permitting extensive sorting of mail while on the move.
Railway mail cars are only part of the tremendous investment railroads have made in facilities for the swift and dependable handling of the United States mails.