Her quiet but profound influence has made a lasting impact on Oklahoma business, education, philanthropy and volunteerism. Her service on numerous boards and trusts has spanned several decades and numerous fields of interest. Margaret Free Miller received a Bachelor's degree in 1932 from Oklahoma College for Women. She majored in English and History. She later received a Master’s Degree in Education from Oklahoma State University. She taught second grade and served as a librarian for 15 years. She was named president of the American Association of University Women, Tulsa County Medical Auxiliary, Oklahoma Medical Auxiliary, Tulsa YWCA, Church Women United of Tulsa and Oklahoma, Girl Scout Board in Tulsa, and second vice president of Tulsa Philharmonic Women's Association Board. She served as chairman of Wheeling Trust Foundation for four years, as president of NEBCCO Foundation Board for four years, on Phillips Theological Seminary Board for three years, and as president of Northeast District Christian Church of Oklahoma. She earned the National Valient Women's Award from the National Association of Church Women United. She was made an Honorary Life Member of American Association of University Women. Her volunteer work also includes service to schools and Metropolitan Ministry.