All issues have illustrated covers, front and back; #DC-14 has a wraparound cover, #DC-16 to #DC-18, #DC-20 to #DC-22 have a cover gallery on the back.
DC's '100-Page Super Spectacular' continued to feature intermittently until 1975, on the following titles (using regular series numbering only):
Action Comics, Batman, The Brave and the Bold, Detective Comics, Flash, House of Mystery, Justice League of America, Our Army at War, Shazam, Superboy, Superman, Superman Family, Tarzan, The Unexpected, The Witching Hour, Wonder Woman, World's Finest, Young Love and Young Romance.