Gatun Locks, Looking South, Panama Canal

Front:
VISTA GENERAL DE LAS EXCLUSAS DE GATUN MIRANDO HACIA EL SUR, CANAL DE PANAMA 5B GENERAL VIEW OF GATUN LOCKS, LOOKING SOUTH, PANAMA CANAL 79179

Back:
I. L. MADURO, JR., 34-46 CATHEDRAL SQUARE, NEXT TO CENTRAL HOTEL P. O. BOX 281, PANAMA PANAMA HATS, SILKS, FRENCH PERFUMES, SOUVENIRS, ETC., ETC. 4- FOR MESSAGE ONLY R