Artist Research
Here are some good websites to use for some of the artists listed:

http://www.artyfactory.com/art_appreciation/portraits/frida_kahlo.htm


http://www.pablopicasso.org/self-portrait.jsp

http://www.henri-matisse.net/paintings/axb.html

http://www.vangoghgallery.com/misc/selfportrait.html

http://www.rembrandtpainting.net/complete_catalogue/start_self_portraits.htm