By Arnold Levin
This book represents the definitive guide on the mute cancel field of World War I which is based upon the world’s greatest collection of such cancels amassed over a period of over 30 years of collecting. Russia’s mute cancels of World War I are one of the great mysteries of philately. The book consists of two parts: 1) a review of literature and research in the mute-cancel field and the administrative areas where mutes were used are listed. Special attention is given to the various kinds of handstamps used. Part 2 is a catalog with over 750 illustrations. Combined, Parts 1 and 2 represent over 370 pages of in-depth information and illustrations.