From February 1984 through February 1996, DC Comics held the license to publish comic books based upon the Star Trek franchise, namely Star Trek: The Original Series (TOS) and Star Trek: The Next Generation (TNG). The main DC Comics Star Trek title was published in two series, comprising 136 issues, 9 annuals, and a number of special issues. Two series were also published based upon Star Trek: The Next Generation, plus several mini-series that linked TOS and TNG.