The true 1st Edition in 2 Volumes of The Encyclopedia of Self Working Card Tricks by Dr. Wilhelm Von Deusen and Glenn G. Gravatt and the second Encyclopedia of Card Tricks by Glenn G. Gravatt.
The first volume cloth bound 440 pages with gilt stamping on cover. The second volume cloth bound with gilt stamping on cover 150 pages.
The first volume top of back strip 1/8 inch tear on either side the bottom back strip 1 inch tear on one side only otherwise condition very fine. The second volume on back strip at top a 1/8 inch tear also on bottom of back strip and a light bump at foot of cover otherwise very fine.
This is a very difficult set to obtain of what later became known as the revised edition by Jean Hugard of Encyclopedia of Card Tricks.