Filtering by: File Format image/jpeg Remove constraint File Format: image/jpeg Digital Collection Series 5: Films/Sound Recordings Remove constraint Digital Collection: Series 5: Films/Sound Recordings Resource Type moving image Remove constraint Resource Type: moving image Subject antarctica--aerial exploration Remove constraint Subject: antarctica--aerial exploration Time Period (Topic) 1920s (1920-1929) Remove constraint Time Period (Topic): 1920s (1920-1929)