The International Brotherhood of Magicians, founded in 1922, is the world's largest (nearly 12,000 members worldwide) and most respected organization for professional and part-time professional magicians, hobbyists, collectors of magic apparatus and books, and enthusiasts. Its more than 300 individual chapters are known as Rings.​

The Harlen Tarbell Ring 43, founded in 1946, is based in Chicago and has had many outstanding magicians as members. Twenty-seven are listed in T.A. Waters' The Encyclopedia of Magic and Magicians, and seven served as I.B.M. International Presidents. Our limited edition 60th anniversary collectors' book, published in 2006, details our illustrious history and accomplishments.