IMDb: Jean Arthur - Filmography, awards, biography, and photos. - http://us.imdb.com/name/nm0000795/
Reel Classics: Jean Arthur - Includes a biography, photos, sound and video clips, movie revies, and related information. - http://www.reelclassics.com/Actresses/Arthur/arthur.htm
Bright Lights Film Journal: Jean Arthur - Review of "Jean Arthur: The Actress Nobody Knew" - biography of Jean Arthur. - http://www.brightlightsfilm.com/26/br_jeanarthur.html