May 30, 1918 Dr. L. H. Pammel Iowa State College, Ames, Iowa. My dear Dr. Pammel: This is to say that I have received the copy of your splendid book. I have heard of it many times, and expected some thing unusually good; but I confess that I was not prepared for the agreeable surprise. It is indeed a monumental work, and the more I study it, the more impressed I am with its value; and coming from my beloved Prof. Pammel, it is all the more a pleasure to me. With sincerely good wishes and kindest regards to Mrs. Pammel, I am, Yours most sincerely, G. W. Carver Director Dept. of Research & Experiment Station