One other non-TMP source that was referenced in the '80s Marvel series was the Star Trek Spaceflight Chronology. Issue 6 shows the Republic as a class of ship from the SFC (Baton Rouge class), and issue 9 gives dates that establish the story as taking place in 2214, which is close to the SFC timeline, though a few years early (according to Memory Beta, the SFC apparently put TMP in 2217).