A US postal card so rare that only four known examples have surfaced in more than a century has been uncovered in a collection inherited by non-collectors. The card, called the ‘Mitchell’ card (for the collector who discovered it) has not been seen in decades. Mitchell (1877–1960), who was one of the country’s foremost experts on postal stationery (stamped envelopes and postal cards), was also … Continue reading Postal Card Rarity Rediscovered