The March United States Postal History Sale - Day 1

approximately 300 covers and cards in two binders, beginning with Chicago's first duplex postmarks in 1881 and continuing through the mid-20th Century, note advertising covers including various hotels, Wesson "time on bottom" cancels, and much more, generally fine to very fine throughout, a wonderful survey of the duplex cancellations used in Chicago across the decades, see Piszkiewicz chapters