In 1904 Edward F. Hanlon, onetime principal of a small Pennsylvania high school, made up his mind to become a doctor. After four tough winters of study, four lean summers of book-peddling, Dr. Hanlon got his M. D. from Philadelphia's Jefferson Medical School. Present at his graduation were his two little sons, Frank and Edmund. With his proud wife Ellen, Dr. Hanlon settled down in Hazleton, Pa., built a big practice, raised five more sons. Whenever the neighbors asked "What do you want to be?" the boys all answered: "Doctors."
Fifteen years ago, Dr. Hanlon went to Frank's graduation from Jefferson, two...