The Dictionary of Literary Biography is a huge multivolume set of encyclopedias, all of which are now online via the Literature Criticism Online database. The specific volumes listed below are of particular use when studying literary theory.
- Twentieth-century European Cultural Theorists, First Series (v. 242; 2001)
- Twentieth-century European Cultural Theorists, Second Series (v. 296, 2004)
- Twentieth-century American Cultural Theorists (v.246; 2001)
- Modern American Critics, 1920-1955 (v. 63; 1988)
- Modern American Critics Since 1955 (v. 67; 1988)