"CPL" rapidly became a popular fan publication, and led to the two forming an alliance with Charlton Comics to produce and publish "the now-famous "Charlton Bullseye" magazine." During the mid-1970s, both Marvel and DC were publishing in-house "fan" publications ("F.O.O.M." and "The Amazing World of DC Comics" respectively), and Charlton wished to make inroads into the superhero market, as well as "establish a fan presence", leading to the alliance with CPL to produce the "Charlton Bullseye". This led to Charlton giving Layton and Stern "access to unpublished material from their vaults by the likes of Steve Ditko, Jeff Jones and a host of others." This association with Charlton (and Bill Pearson, production manager) in turn led to Layton becoming acquainted with the legendary Wally Wood, with whom he apprenticed. This apprenticeship led to work for Charlton on anthology titles, but not working from the Charlton offices, Marvel Comics and DC Comics, while still publishing fanzines.