Heckel - 10427, belonging to Gerald Corey, Editor.
Heckel - 7133, Charles Nusbaum (contact the Editor.)
Fox - 2620, Morehead State University, Morehead, Kentucky
Fox - 1592, College of St. Thomas, St. Paul, Minnesota
Fox - 2779, Indianapolis area. (contact FOX Products, South Whitley, Ind. 46787.)