National Geographic : 1939 Oct
WAR CLOUDS OVER DANZIG AND POLAND'S PORT 555 © Hanns Tschira from European DANZIG STILL STORES CARGOES IN HER FIVE-CENTURY-OLD CRANE TOWER Cumbersome machinery in the massive structure on the Mottlau River hoists foodstuffs and merchandise from the holds of ships tied up alongside. Two big treadwheels furnish motive power. The storehouse was built nearly half a century before Columbus sailed. Then Danzig was Poland's granary.