When was Necropolis originally published?  I have the 3E version, but am assuming that's a conversion from an earlier publication.  Does anyone know more about it?

Necropolis was indeed first published for Dangerous Journeys in 1992 or 1993 (it actually does not have a copyright date, tsk tsk), with the full title being "Necropolis and the Land of Aegypt Campaign Scenario." It was book #4 (actually the 5th book in the series, considering Mythus Prime is Book #0). It was 224 pages compared to the 288 pages of the Necromancer version, and included only chapters 1 through 9 (plus statistics in an appendix) and a very basic appendix detailing Aegypt, while the Necromancer version included far more detailed appendices including monsters, the lands of Khemit (as Aegypt was known in the new edition), the gods of Khemit, and new classes, items, and spells, all for d20 of course.

I actually have the first copy of the Necromancer Necropolis sold at Gen Con 2002 (signed by Clark Peterson as such), which probably makes it the first ever sold to a consumer... as I also have the first ever Wilderlands of High Fantasy boxed set ever sold, the first item sold by White Wolf at Gen Con 2005 (they were still setting up the cashier's machine and credit card machine when I showed up)... yeah, I love this stuff!

During the depositions for the TSR PoG vs NIPI suit in 1987 or so, they really interrogated me about why the original Necropolis was dedicated to me in the way that it was ("the proof is in the pudding" etc.).

We had hoped to publish that through NIPI, but it had to wait for DJ.