1924, Trans-Polar Flight Expedition, small card posted from New York, Jan 21, to Norway, reverse has two Norwegean stamps canceled 2.VI.25, addr to Philoadelphia (Image)

Cat. US$60.00

1935, Byrd Antarctic Expedition, Little America Jan 30 machine cancel ties 3¢ Byrd #733 stamp on cover with black penguin cachet, addr to Canandaigua, NY, BS San Francisco, March 25 (Image)

Cat. US$35.00

1971, beauiful Circus cachet commemorating Old Milwaukee Days, carried on coach from Madison to Milwaukee June 25-28, Mail Coach cachet & 6-line text on reverse (Image)

Cat. US$25.00