http://www.1920-30.com/fashion/the-bob.html

http://www.hairarchives.com/private/1920s.htm

http://www.1920-30.com/publications/hairstyles/index.html

http://en.wikipedia.org/wiki/Bob_cut

http://www.beauty-and-the-bath.com/Long-Bob-Hairstyles-For-Bobbed-And-Length.html

http://www.instanthairstyle.com/shag-hair-styles-shag1.html

http://www.hair.becomegorgeous.com/newest_trends/new_bobbed_hairstyles_with_pictures-107.html

http://www.instanthairstyle.com/picture-of-short-hair-style.html

http://www.hair.becomegorgeous.com/newest_trends/trendy_new_bobbed_haircuts-108.html

http://davis.wpi.edu/~matt/courses/hair/hrstlmodeling.html