http://www.thepinupblog.com/files/7d5b517db1687bcf3f10d0d785a2829e-93.html

History and advertising in Pin Up Photography

http://www.articlesbase.com/art-articles/the-history-of-pinup-396493.html

Fun facts on the history of Pin Up Photography

http://kentsteine.com/history.htm

A brief history of Pin Up Photography

http://www.shoshanastudio.com/pinup/history.htm

Another site on the origin of pin up photography and history of it entering the U.S.

A History of Pin-up Art & Glamor Photography

http://www.articlesbase.com/art-articles/a-history-of-pinup-art-glamour-photography-391736.html

This is another site on the history of pinup photography and glamor photography.