internet worldwide architecture slide wanted

Hi,
I am looking for a simple, clear and didactic slide, showing the Internet 
Network worldwide architecture. This is to compare with OSI and Tymnet 
previous deployments, and document the basics, similarities, differences, 
transitions. Has someone such a slide or remember a particularly well done 
one, easy to understand by non technical decision makers? It does not need 
to be exhaustive, but understandable.
Deep thanks for your help.
jfc