Columbian Expo (49) mostly unused postcards printed on postal cards, sleeved, most IDed, a few w/ 1ยข Columbian stamps affixed; most are the official colored Goldsmith designs, but also B&W Girsch; cplt set of (4) pre-seal Goldsmith cards, smaller in size for use in slot machines at the Fair (scarce); gen F-VF+ (Image)