Arctic explorers Amundson and Omdahl with plane

Credit - (c) 2002 National Air and Space Museum, Smithsonian Institution (SI Neg 79-11336)

Portrait of Richard Byrd

Credit - (c) 2002 National Air and Space Museum, Smithsonian Institution (SI Neg 73-10094)

The Norge dirigible in England.

Credit - Library of Congress/Detroit Publishing Company Collection

Norge preparing for its polar flight

Credit - Library of Congress

Arctic explorer Roald Amundsen

Credit - (c) 2002 National Air and Space Museum, Smithsonian Institution (SI Neg A-31830-A)

Flying boat used on Amundsen's North Pole expedition

Credit - (c) 2002 National Air and Space Museum, Smithsonian Institution (SI Neg 85-6624)

Map of North Pole expeditions

Credit - National Air and Space Museum, Smithsonian Institution (SI Neg A-31816-A, copyright holder: American Geographical Society)

Dirigible pilot Umberto Nobile

Credit - Library of Congress

Plane Josephine Ford used for North Pole expedition

Credit - (c) 2002 National Air and Space Museum, Smithsonian Institution (SI Neg A-43960-B)