Clute, John and Peter Nicholls. "Norton, Andre." In The Encyclopedia of Science Fiction. Edited by John Clute and Peter Nicholls, et al. New York: St. Martin's Griffin, 1995, pp. 877-878. Summarizes Norton's career and identifies key publications in her development as a writer.

Jones, J. Sydney. "Norton, Andre." In Something about the Author. Volume 91. Edited by Alan Hedblad. Detroit: Gale Research, 1997, pp. 148-156. This article includes an extensive bibliography of Norton's publications plus several pages summarizing her career, focusing mostly on her recent works.

Platt, Charles. "Andre Norton." In his Dream Makers: Volume II. New York: Berkley Books, 1983, pp. 95-102. This interview provides a snapshot of Norton in the late 1960s or early 1970s. And yes, she has a cat she introduces to Platt. It is Ty, an Abyssinian who, Norton points out, is unusually reddish, Abyssinians usually being gray.

Schlobin, Roger C. Andre Norton...