Judson T. Landis was NCFR's 13th President from 1955-56. He was professor of Family Sociology and member of the Institute of Human Development at the University of California Berkeley. He and his wife Mary co-authored the book "Building a Successful Marriage". It sold over a half million copies and was a popular text. He authored many additional books and articles. He was NCFR’s official representative to the International Family Conference at the Hague, sponsored by the International Union of Family Organizations (IUFO).