Filtering by: Digital Collection Sir George Hubert Wilkins Papers Remove constraint Digital Collection: Sir George Hubert Wilkins Papers Subject antarctica--aerial exploration Remove constraint Subject: antarctica--aerial exploration Subject hearst, william randolph, 1908 Remove constraint Subject: hearst, william randolph, 1908 Subject airplanes Remove constraint Subject: airplanes Time Period (Topic) 1930s (1930-1939) Remove constraint Time Period (Topic): 1930s (1930-1939)