sentences:  These carriages were fitted with posting boxes.Following World War I, the Jamaican economy declined and the government decided to eliminate the expense of maintaining a railway station postal system; by then, these offices duplicated the services of most nearby post offices.Effective 31 December 1924, the government withdrew the facilities for posting mail at railway station windows and receiving boxes, thereby eliminating the system of clearing the railway station postboxes ten minutes before a train was due.