Links in MFC VC Encapsulation Experts articles

http://groups.google.com/group/microsoft.public.vc.language/msg/cceb96ee71a40aae

http://joecosby.com/code/mail.pl

http://members.cox.net/doug_web/threads.htm

http://vcfaq.mvps.org

http://www.boost.org/libs/format/index.html

http://www.cplusplus.com/doc/tutorial/polymorphism.html

http://www.ddj.com/cpp/184401197

http://www.ddj.com/dept/cpp/184401197

http://www.research.att.com/~bs/bs_faq2.html#friend

www.codeguru.com

www.codeproject.com