This encyclopaedic study is the fruit of twenty years of collecting, research, and study of the most significant American costume jewellery from 1930-1950. It offers readers a meticulous, reliable instrument to knowing these gems, which are often true and proper little works of art. In the two volumes, over 966 photographs show hundreds of jewellery items in full-colour, with an additional 729 illustrations of patents, advertisements, and historic photos. Thirty-seven companies are included, with additional chapters on "jelly belly" jewellery and patriotic jewellery in the second volume. In-depth research of the companies makes this the best source on the American costume jewellery industry. The first volume, A-M, covers the companies from Accessocraft to Mosell, and includes Boucher, Coro, Eisenberg, Miriam Haskell, Hobe and others. The second volume N-Z, continues with Norma Jewelry Corp., through Rebajes, Reja, Trifari, to Uncas Manufacturing, with chapters on jelly belly jewellery and American patriotic jewellery.