Postmarks & Cancellations of the Netherlands 1570-1870, by P.C. Korteweg.  An exhaustive study of all types of postal markings and cancellations of the early Netherlands posts, including military, official, maritime, town and more.  In Dutch.  Postillion reprint of the 1928 original, card covers, plastic GBC binding, 328 pages, illustrated in B&W, new.  Size: 8½" X 11".