Subjects include: pregnancy sera screening; polymorphism; St. Mark's Hospital Polyposis Registry; publications by ICRF staff; periodontal diseases; family typing studies carried out at Stanford University with Rose Payne; studies on African and Chinese populations. Correspondents: Folder 1: Peggy Pickles, Dr. Gyozo Petranyi, Dr. Min Sik Park, Peter Parham, Miscellaneous P ( =Res.) …