Dr James Mackay was one of the world's foremost authors on collectables such as coins, stamps, antiques and bronzes, and wrote over 100 books and thousands of articles on the subject. He was co-editor of the annual Coins Yearbook and Banknote Yearbook (Token Publishing) and also wrote The Beginner's Guide to Coin Collection (Grange Books) and Value in Coins and Medals (Johnson Publications). He is also the author of The World Encyclopedia of Stamps and Stamp Collecting (Lorenz Books).