1994
In the Foreword, Alan Truscott notes,
The changes in the technical section have been far greater than in any of the earlier editions, reflecting the many theoretical advances in the past decade.
The four part organization of the book follows the format of its immediate predecessors. More than 2,800 bridge personalities are listed in the biographies, largely updated by Dorthy Fancis; Truscott prepared most of the technical and foreign material with Frank Stewart contributing significantly to the technical; the expanded 21 page bibliography was prepared by William Sachen. Previous editions were published by Crown Publishers Inc. of New York; the 5th edition was published by the American Contract Bridge League.
Read more about this topic: The Official Encyclopedia Of Bridge, Fifth Edition