USA, Stemplet postkort med frimærke
1964. USA. U.S. ARMY POLAR RESEARCH & DEVELOPMENT CENTER CAMP 100 CENTURY NUCLEAR POWERED CITY UNDER THE ICE 800 MILES FROM THE NORTH POLE GREENLAND DANISH TERRITORY on card with 2 ex 4 c. cancelled 30 nov 1964.
michel 755

Canada, Brev
1969. CANADA. WORLD´S MOST NORTHERLY WEATHER STATION - NEXT TO THE POLE ALERT THULE on cover with 2 ex 6 c. cancelled ALERT 8 IX 69.
michel 432

USA, Stemplet postkort med frimærke
1982. USA. ARCTIC EAST USNS MAUMEE THE POLAR PIPELINE SERVING THE ENDS OF THE EARTH THULE, GREENLAND on cover with 20 c. cancelled FORCE POSTAL SERVICE 09023 30 JUL 1982.
michel 1533

USA, Stemplet postkort med frimærke
1967. USA. Cover with 20 c. cancelled ARMY & AIR FORCE POSTAL SERVICE APO 09023 NOV 8 1967 NORTH POLE TOP OF THE WORLD CHRISTMAS CELEBRATION. sent from Thule Knud Iversen, APO NEW YORK 09023 USA.
michel 669