"I have been very much interested by your new book and have assigned several of the
chapters for reading in connection with a graduate course. As evidence of my interest
in it I can cite the fact that it is the first scientific book which I can remember
reading during the course of a fishing trip, although I have carried many with me
in the past." Charles P. Smyth. Letter to Linus Pauling. December 15, 1939.