I believe the cartoonist who did the MAD parody was the same who did the cover for the 1970 "The Sesame Street Book of People and Things." Here's the only photo of the cover I could find in a hurry: http://cgi.ebay.com/the-SESAME-STREET-BOOK-OF-PEOPLE-AND-THINGS-1970-BOOK_W0QQitemZ120125223822QQihZ002QQcategoryZ279QQrdZ1QQssPageNameZWD1VQQcmdZViewItem Gordon is in the middle of a leapfrog move, among other pictures. So, does anyone know the name of the cartoonist(s)? Thanks! Lenona.