Bob Kane incarnation of Clayface. According to Kane, he drew the Penguin after being inspired by the then advertising mascot of Kool cigarettes — a penguin with a top hat and cane. Finger, however, claimed that he created the villain as a caricature of the aristocratic type, because "stuffy English gentlemen" reminded him of emperor penguins. In 1966, Kane retired from DC Comics, choosing to focus on fine art. As Kane's comic-book work tapered off in the 1960s, he parlayed his Batman status into minor celebrity. He enjoyed a post-comics career in television animation, creating the characters Courageous Cat and Cool McCool,
Comic book pseudonymous writer "Drake Waller" (Arnold Drake and Leslie Waller), penciler Matt Baker and inker Ray Osrin, touted as "an original full-length novel" on its cover. In 1971, writer-artist Gil Kane and collaborators devised the paperback "comics novel" "Blackmark". Will Eisner popularized the term "graphic novel" when he used it on the cover of the paperback edition of his work "A Contract with God, and Other Tenement Stories" in 1978. In 2017, the comic book market size for North America was just over $1 billion with digital sales being flat, book stores having a 1 percent decline, and comic book stores