Literature. E.D. Bacon, 'The Line-Engraved Postage Stamps of Great Britain Printed by Perkins Bacon & Co.', Volumes I and II, published by Chas. Nissen & Co., 1920, first edition, 240 large pp. + plates, and 322 large pp., respectively. Also 'Supplement' issued in 1929, 50 pp. All used in somewhat worn condition. Rarely offered set.
