Stamps, Philatelic Publishers, 1968 Cover Collecting - A Collecta Guide to First Day & Other Covers, Philatelic Publishers, 1968 East Africa: The Story of East Africa and Its Stamps, Philatelic Publishers, 192 pp, 1970, New Encyclopedia of Stamps, IPC Magazines, 1970 Airmails, 1870-1970, Batsford, 216 pp, 1971, The World of Classic Stamps; 1840-1870, New York: Putnam, 1972. The Dictionary of Stamps in Colour, Michael Joseph, 296 pp, 1973, Stamps, posts, and postmarks, by Ian Angus (pseudonym). London: Ward Lock, 1973. , 128p. An Illustrated History of Stamp Design by William Finlay (pseudonym), Peter Lowe, 187 pp, 1974, Encyclopedia of World Stamps, 1945-1975, Lionel Leventhal Ltd, 160 pp, 1976, Scottish Postmarks 1693-1987, J.A. Mackay: self-published, 68 pp, 1978 The Circular Name Stamps of Scotland, J.A. Mackay: self-published, 1978 The Skeleton Postmarks of Scotland, J.A. Mackay: self-published, 1978 The Floating Post Offices of the Clyde, J.A. Mackay: self-published, 1979, 40p. English and Welsh Postmarks Since 1840, J.A. Mackay: self-published, 1980, 254pp. Stamp Collecting, Park Lane Press, 80pp, 1980 British Post Office Numbers 1924-1969, J.A. Mackay: self-published, 50 pp, 1981 Telegraphic Codes of the British Isles, 1879-1924, J.A. Mackay: self-published, 90 pp, 1981 The Parcel Post of the British Isles, J.A. Mackay: self-published, 232 pp, 1982 Registered Mail of the British Isles, J.A. Mackay: self-published, 395 pp, 1982 Irish Postmarks Since 1840, J.A. Mackay: self-published, 222 pp, 1982 The Guinness Book of Stamps: Facts and Feats, Enfield: Guinness Publishing, 225 pp, 1982, ; 2nd Edition, Guinness Publishing Ltd, 225 pp, 1989, Official Mail of the British Isles, J.A. Mackay: self-published, 349 pp, 1983 Scottish Twin-Arc Postmarks with Stampers Numbers 1894-1963, J.A. Mackay: self-published, 1983, 53p. The Postal History of Glasgow, J.A. Mackay: self-published, 1984 Surcharged Mail of the British Isles, J.A. Mackay: self-published, 1984, 138 pp British Stamps, Longman, 247 pp, 1985, Dátstampái Rubair na bhFo-Oificí an Phoist in Éirinn, J.A. Mackay: self-published, 1985 , 96p. Sub Office Rubber Datestamps of Ireland, J.A. Mackay: self-published, 1985 , 68p. Sub Office Rubber Datestamps of Scotland, J.A. Mackay: self-published, 1985 , 63p. Postal History of Dumfries, 1986, self-published, 120 pp, Sub Office Rubber Datestamps of England and Wales, J.A. Mackay: self-published, 1986, English Provincial Krags (Machine Cancellations), 1987 Irish Slogan Postmarks 1918-1986, J.A. Mackay: self-published, 1987 , 69p. Postmarks of England and Wales, J.A. Mackay: self-published, 352 pp, 1988, Under the Gum – Background to British Stamps 1840–1940, Limassol: James Bendon, 1997, , 536p. Philatelic