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Two phenolic earpieces connected together by curved leather covered metal. On the bottom of each earpiece there is an attached wire with a male plug at the other end. Anne Morrow Lindbergh wore these radio headphones as she flew with her husband Charles to the Orient in 1931 and on survey flights across the North and South Atlantic in 1933. Anne, who served as co-pilot, operated all of the radio equipment during the Lindberghs' two trans-global flights, performing an impressive daily workload, and set a telegraph transmission distance record.