Another word about Raymond Feist:
While not published under either of the TSR imprints, Feist's
Riftwar Saga might as well have been. (Except for being too good for them.

)Briefly, the series tells the story of a fantasy world of elves, humans, etc. that is invaded by another race through a dimensional rift. The main world of Midkemia is firmly AD&D, with everything from the thief abilities to how magic works to Drow Elves being lifted directly and faithfully from the AD&D manuals. The invading Tsurani are based on another less-popular TSR RPG,
Bushido.
The first volume of the series,
Magician (since split into two volumes) is dedicated to, among others, "The Friday Nighters," Feist's group of D&D-playing cronies.
I love this series. Other later Feist series and spinoffs are decent, but the original books really show flair and originality in translating RPG's to the printed page.