Paul L. Errington (1902-1962) was listed by Life magazine in 1961 as one of the top ten naturalists of his day, along with Rachel Carson, Joseph Wood Krutch, and Roger Tory Peterson, and he won the Wildlife Society’s Aldo Leopold Award in 1962. In addition to Of Men and Marshes, Muskrats and Marsh Management, and Muskrat Populations, he was the author of some two hundred scientific articles and three posthumous books: Of Predation and Life, The Red Gods Call, and A Question of Values.