Note: This was a fanzine featuring news, reviews, etc as well as occasional new strips featuring the 60s Charlton characters and others. Published with the cooperation and sponsorship of Charlton. A new Captain Atom story surfaced in the fanzines CHARLTON BULLSEYE #1 and #2, 1975.

Note: When Bob Layton began publishing this series, it was essentially Layton's sales catalog. With issue #5, it turned into a small fanzine with a catalog insert. The later issues featured a mixture of articles, columns, interviews, pin-up art, and comic strips. Issue #7 featured the first published image of John Byrne's ROG 2000. Issue #11 featured the first full story of ROG 2000. Issues #9 and 10 were combined to form a one-shot entitled "CPL Special Double Issue #9 & 10... Presents the Charlton Portfolio" (which has a separate series entry in the GCD). The final issue was #12, published in 1975.

Note: 12 issues of CPL were published, but this is the only one to have the title "The Charlton Portfolio", which is part of the indicia title and the only title on the cover.

Note: "Heroes, Inc. Presents" on cover; "Heroes Inc." in indicia