British Council
British Council Arts: Doris Lessing
This site contains a lengthy bibliography of Lessing's work, a statement by her, contact information and a brief summary of her life so far.
Swiss Educ
Swiss Educ: Lessing, Doris 1919
This large site offers both background, personal interviews, examples of Lessing's work, and suggestions for teaching it.
Other
University of West Alabama: Anglophone Women Writers
This University of West Alabama site features a selected bibliography of Lessing's works (includes bibliographies of other African women writers).