House ad for 80-Page Giant #6 [Superman] (January 1965); printed in Detective Comics #335 (January 1965)
Comic cover art: pencils by Curt Swan, inks by George Klein, letters by Ira Schnapp
Ad designed and lettered by Ira Schnapp
Not to be confused with the first 84-page Superman Annual, which came out four years earlier.
Cover of Superman Annual #1 (August 1960), pencils by Curt Swan, inks by Stan Kaye, letters by Ira Schnapp