1961 Herter's Professional Predator Calling Manual,5-1/2" x 8-1/2" with 11 numbered pages Content: It's marked "Copyright 1961 Tenth Edition".There are 4 pages of general instructions for using the Professional Predator Call.There are 5 pages of game specific calling tips for 16+ animals. Excellent Condition with a crease where folded in the middle