Complex sentence: Charlton Comics published the "Tales of the Mysterious Traveler" comic book for 13 issues from 1956 to 1959, followed by two more issues in 1985 before the company went under.
Split into simpler sentences: Charlton Comics published a "Tales of the Mysterious Traveler" comic book for 13 issues from 1956 to 1959. They came out with 2 more issues in 1985, before the company went under.