In April-through-June of 1994, DC Comics published the three-part Superman/Doomsday: Hunter/Prey mini-series, featuring the first rematch between the titular characters, since their initial conflict in the landmark "Death of Superman" storyline.
At the time, all the mainline Superman books had a small triangle on the cover with a one or two-digit number inside it, indicating the chronological reading order of the books being published that year. The Superman/Doomsday: Hunter/Prey mini-series didn't have these numbers on the covers though, making it initially unclear as to quite when the story was set, in relation to the wider Superman continuity. There were also no helpful captions or statements in the mini-series to clarify matters.
For some time, I was under the impression that the story took place after Adventures of Superman Vol. 1 #512 (May, 1994), based on the following statement made in the letters column for Superman Vol. 2 #0 (October, 1994).
We've all grown very accustomed to the ol' triangle numbers telling us exactly where things fit in, Joe and Dan. Thanks for doing some legwork of your own. In fact, SUPERMAN/DOOMSDAY did take place after Superman lost most of his excess power...but it is possible that he was simply de-powered to the level he was at just before his abilities went out of control...y'know, back when he was able to travel in space (circa SUPERMAN #86). That seemed like a good power level to us...and apparently to you superfans, too. Now back to letters for SUPERMAN #90.
For context, Adventures of Superman Vol. 1 #512 was the issue where the Parasite drained away the excess power which had been building up in Superman's body since he was exposed to 'Kryptonite-X' radiation in Superman Vol. 2 #82 (October, 1993), the concluding chapter of the "Reign of the Supermen" storyline. (The Kryptonite-X radiation caused his body to absorb the solar energy that fuels his powers at a faster rate than usual, which led to his powers gradually increasing until he could no longer control them.)
However, I later stumbled upon a story in Superman: The Man of Tomorrow #9 (September, 1997), where Jonathan Kent indicated that the events of Superman/Doomsday: Hunter/Prey took place before the Parasite drained off Superman's excess power.
Clearly, what was stated in this issue, and what was stated in the Superman Vol. 2 #0 letters column, can't both be correct. So is there any other evidence which can help clarify when Superman/Doomsday: Hunter/Prey is actually set, in relation to the mainline Superman books...? (In particular, whether it's set before or after Adventures of Superman Vol. 1 #512...?)