(written from a Production point of view)
Joan Pearce is a script researcher who worked on the entire Star Trek franchise, from the beginning of Star Trek: The Original Series to the end of Star Trek: Enterprise. She is the founder of Joan Pearce Research Associates.
On the original Star Trek, Pearce worked directly with the staff to ensure continuity and to prevent the series from encroaching on other science fiction stories. She has since helped research over 700 hours worth of scripts. Among the specific episodes she assisted with was Star Trek: Deep Space Nine's "Inter Arma Enim Silent Leges", for which she provided writer Ronald D. Moore information on the Latin phrase which makes up the episode's title. (AOL chat, 1998)
On 28 July 2006, an extensive collection of scripts and production material from Pearce's personal collection was auctioned off at the the 25th Annual Profiles in History Hollywood Auction.