LITERATURE: ex-dealer's reference books including Australia Airmails (Eustis), plating guides for GB 1d blacks, 1d reds, Pim's New Zealand (1947), Robson Lowe, Asia III, Europe Vol. I, Africa Vol. II, N America I &II, III & VI, Wyndham S Africa Airposts, Billig's Handbook vols. 1 and 2, etc. A useful group, mainly good to fine (30) (Image)