Party affiliation: Democrat
Mary Catherine Twitchell, American speech pathology/audiology services professional, educator. Member of Council Higher Education, South Dakota Nu Voice Club-American Cancer Society, South Dakota Speech Hearing Association, American Speech-Hearing-Language Association (certified clinical competence in speech-language 1965).
- Speech and hearing clinician public schools, Aberdeen, South Dakota, 1961—1962, Rapid City, 1962—1963, Laramie, Wyoming, 1966—1967. Instructor, clinical supervisor United States dollar, Vermillion, 1967—1974, speech and hearing clinic coordinator, since 1975, assistant professor communications disorders, since 1980, graduate assistant, 1964, Michigan State University, 1965—1966.