Warner, Ralph E. (Ralph Emerson), 1906-1957 (Nombre personal)

Bibliografía de la poesía mexicana, 1934: t.p. (Ralph E. Warner)

Oberlin Alumni Magazine, 1957: p. 31 (Ralph Emerson Warner; b. June 8, 1906; d. April 30 1957; professor of Romance languages and literatures at the University of Colorado)