1891 POSTCARD STAMPED ON FRONT "WILLMARTH & HAZELTON DRUGGISTS AND DEALERS IN PATENT MEDICINES, PAINTS, OILS & FINE CANDIES AND CIGARS, SPECIALTY OF FINE COFFE AND TEA COX BLOCK POTSDAM NY HEADQUARTERS FOR F. E. C. KIDNEY REMEDY"  POSTMARKED "POTSDAM NY 1891"