Baumann, Cecilia C. Wilhelm Müller: The Poet of the Schubert Song Cycles: His Life and Works. University Park: Pennsylvania State University Press, 1981, 191 p.
Devotes the first chapter to a lengthy biographical sketch of Müller.
Brown, Maurice J. E. Schubert: A Critical Biography. New York: St. Martin's Press, 1958, 414 p.
Includes biographical and critical passages on Müller and his poetry.
Hatfield, James Taft. "Unpublished Letters of Wilhelm Müller." American Journal of Philology XXIV, No. 2 (April, May, June...
(The entire section is 491 words.)