GERRIT DE JAGER

I mentioned this a while ago, but I received a better scan from Kjell Knudde, so here it is again.

Dutch comic book artist Gerrit de Jager added an illustration to the back-cover of "Wordt Vervolgd: Stripleksikon der Lage Landen", a 1979 encyclopedia about Dutch and Flemish comic books by Evelien and Kees Kousemaker.
He illustrated the letter "Z" and added a the cover of Frank Zappa's "Chunga's Revenge" album to the side of the bed.