U.S. Postmarks, a very informative group of seven books on postmarks of the U.S. including A Guide to 19th Century United States Postmarks and Cancellations, 1989 First Edition; Handbook of Naval Postmarks, 1939, Second Edition (this one is autographed by the author Joseph Hale); A Collector's Guide to U.S. Machine Postmarks 1871-1925, 1989, Third Edition; The Street Railway Post Offices of Boston, 1981; Postmarks on Postcards - Early 20th Century U.S. Postmarks, 2002, Second Edition; Flag cancel Encyclopedia, 1976, Third Edition; Postal History and Usage of 1907 and Earlier Precancels, 1989, First Edition, Fine.
Estimate $40 - 60. Est. $40-60 (Image)

Est. $40-60

Armstrong, M., U.S. Definitive Series, 1922-1938, 1980, second edition, used, paper back, Very Fine.
Estimate $25 - 35. Est. $25-35 (Image)

Est. $25-35

Armstrong, Martin, United Stated Definitive Series 1922-38; Coil Issues 1906-1938, First and Second editions of the Definitive Series, Fine.
Estimate $30 - 40. Est. $30-40 (Image)

Est. $30-40

Bierman, M.D., Stanley M., The World's Greatest Stamp Collectors & More of the World's Greatest Stamp Collectors, the two books in a slipcase, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30

Bomar, William J., Postal Markings of United States Expositions, First Edition, 1986, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30

Datz, Stephen R., 2003 Catalogue of Errors on U.S. Postage Stamps, 12th edition, Fine.
Estimate $10 - 15. Est. $10-15 (Image)

Est. $10-15

Gilman, Kenneth L. Editor, A Guide to 19th Century United States Postmarks and Cancellations, hardboud, First edition, 1989, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30

Harper, Alf, Philately of the Thrid Reich - Postage and Proganda, including a special catalog of postcards from 1933-1945 in German, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30

Helbock, Richard W., United States Post Offices, Volume IV - The Northeast, First Edition, 2001, Fine.
Estimate $15 - 20. Est. $15-20 (Image)

Est. $15-20

Luff, John N., The Postage Stamps of the United States, 1981, reprint of the original edition from 1902, Fine.
Estimate $25 - 35. Est. $25-35 (Image)

Est. $25-35

Micarelli, Charles N., Manual & Identification Guide to the United States Regular Issues 1847-1934, spiralbound, 1979, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30

Planty, Dr. Earl, Planty's Photo Encyclopedia of Cacheted F.D.C.s, First Edition, 1977, Fine.
Estimate $25 - 35. Est. $25-35 (Image)

Est. $25-35

Sieger, Zeppeling Post Katalog, 20 Auflage, some of the pages are loose but still a great reference, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30

Whitney, Dr. J. T., Collect British Postmarks, The Handbook to British Postal Markings and Their Values, softbound including both the Fourth and Seventh Editions, Fine.
Estimate $20 - 30. Est. $20-30 (Image)

Est. $20-30