Herter's Professional Predator Calling Manual. Material: paper, metal. Size: 5 1/2" x 8 1/2". Description: white booklet with front cover information: "Herter's Professional Predator Calling Manual, by George Leonard Herter and Jacques P. Herter, Waseca, Minnesota"; contents: 15 pages of instructions and photos on how to use the predator call. See artifact #39.15.2.
