OK, so this is just a suggestion, but the wikipedia article (en.wikipedia.org/wiki/Star_Wars:_From_the_Adventures_of_Luke_Skywalker#Differences_from_the_film) says the Lippincott in question is Charley Lippincott (Charles Lippincott), the publicity guy from ANH.
Of course the wikipedia article ALSO lacks a source for this, which is why I'm just dropping this into 'Talk' and not making an edit to the article. Its just that the only "Andy Lippincott" I could find is a comic strip character (from "Doonesbury") which first appeared in 1976.
ToldnessGM (talk) 18:57, 28 January 2022 (UTC)