Here is a link to Snopes and what you refer to about the Girl Scouts and Planned Parenthood.  I grew up in Girl Scouts and was a Brownie for several years and was never, ever given any literature like you refer to and was not directed to promote or be involved with Planned Paretnhood. Snopes is marked as mixed but provides all sides.
 
 http://www.snopes.com/politics/sexuality/girlscouts.asp

As for my favorite cookie... Thin Mints and Shortbreads
Betsy