Notes:
Kubert did pencil and ink work for The Superhero Book of Goodies (Superhero Enterprises, 1977 series) v1#2 (April 1977), a continuation of The Superhero Merchandise Catalogue (Superhero Enterprises, 1975 series).
The catalog was in comic book format and was sold like a comic book using the artwork of Joe Kubert School artists, including Kubert himself. It sold all manner of comic-related merchandise.