Commire, Anne. ed. Something About the Author. Vol. 5. Detroit: Gale Research, 1973. Includes a short biography of W. E. Butterworth and statements by him about his writing.

Ethridge, James M., and Barbara Kopala, eds. Contemporary Authors. First Revision, Vols. 1-4. Detroit: Gale Research, 1967. Includes paragraphs about W. E. Butterworth's personal life and career, as well as a list of publications.

Holtze, Sally Holmes, ed. Junior Authors & Illustrators. Vol. 5. New York: H.W. Wilson, 1978. A short biographical sketch and photograph of the author.

Munroe, Mary Hovas, and Judith Rogers Banja, eds. The Birthday Book: Birthdates, Birthplaces and Biographical Sources for American Authors and Illustrators of Children's Books. New York: Neal-Schuman, 1991. Provides pen names, birth date, birthplace, and sources for finding information about authors and illustrators alphabetically by last name, by month of the year, and by geographical location. Butterworth is included.

Tarbert, Gary C , and Barbara...