First Day and Early Use Boston Flag Cancellations. October-December 1894
Warren, OH: Machine Cancel Society, Publisher, 2000. Wraps. Side stapled blue wraps. 16 pp. Photocopied examples of flag cancels throughout. A monograph on Boston flag cancellations used by the US Post Office, the first machine cancellations used, preceded by fancy cancellations that sometimes incorporated flags into their designs. Originally written..... More