North Russian Expedition, 1918-19. 11 covers and 3 cards to the U.S.; 9 with various 'polar bear' British military "P.B." date stamps including P.B.'s 1, 2 & II, 55 & 66, five with YMCA corner cards, many bearing "North Russian Exp." or "Archangel, Russia" soldier's endorsements, cards including U.S. and British field service cards, one cover with enclosure, usual cover faults, F.-V.F., a remarkable and scarce group. Estimate  $750 - 1,000. $0 (Image)