Richard Greenwell, who just passed away, reportedly had planned to write a book on cryptozoology, but never did. Few knew that he had co-edited two books. His first was Nutrition, Food, and Man: An Interdisciplinary Perspective by Paul B. Pearson and J. Richard Greenwell (ed), Tucson: University of Arizona Press, 1980.
The second reflected his interest in ufology, which came before his cryptozoology involvement. It was Sightings: UFOs and the Limits of Science by Ronald Story and J. Richard Greenwell (ed.), NY: William Morrow and Company, Inc., 1981, and London: New English Library. A paperbound version was published as well, New York: Quill, 1982. Greenwell’s name, therefore, is often found in early ufological works because of his analyses in that field.