The Calle Comercio district on the south side of the Old Town at San Juan, Puerto Rico. The photographer is looking north-east-by-north from a boat in the harbour showing one of the Popular class of passenger motor ferry launches alongside the landing place. A muzzle loading cannon is displayed on the quayside. In the plaza of the Calle Comercio there is a great deal of pedestrian and vehicular activity. In the right background is the cable office building of the West India and Panama Telegraph Co. Ltd. and the Western Union Telegraph Company. Tall lattice steel wireless masts are onthe roofs of two buildings.