1924/38, USA, 20 letters and cards on the exploration of the Arctic/Antarctic: a postcard "The Trans-Polar Flight Expedition 1924", 3 letters "Wilking-Ellsworth Tans-Arctic Submarine Expedition 1931", 12 illustrated airmail covers welcoming Admiral R. Byrd (return from 1st Antarctic Expedition 1931, 3 letters from his expedition 1935 and a Danish postcard on the Northeast Greenland Expedition 1938/39, well preserved

1924/38, USA, 20 Briefe und Karten zur Erkundung der Arktis/Antarktis: eine Postkarte "The Trans-Polar Flight Expedition 1924", 3 Brief "Wilking-Ellsworth Tans-Arctic Submarine Expedition 1931", 12 illustrierte Luftpostbelege zur Begrüßung von Admiral R. Byrd (Rückkehr von 1. Antartkisexpedition 1931, 3 Briefe von seiner Expedition 1935 sowie eine dänische Postkarte zur Nordostgrönland Expedition 1938/39, gute Erhaltung