Above and below are pre-production mixed media (graphite, colored pencil and marker pen on paper) concept drawings by Chuck Jones for his 1966 TV special "Dr. Seuss' How the Grinch Stole Christmas" that aired December 18, 1966 on CBS, pre-empting Lassie.
"Cindy-Lou Who surprises the Grinch. I drew Cindy-Lou to appear like a great-grandchild of the Grinch, but with everything right where he is wrong."–Chuck Jones
Boris Karloff narrated, June Foray was the voice of Cindy-Lou Who and Thurl Ravenscroft (the voice of Tony the Tiger) sang "You're a Mean One, Mr. Grinch," which was composed by Albert Hague with lyrics by Ted Geisel (Dr. Seuss.)