If they were done for 3E I have them all (except Streets of Silver). If they were done for 2E, I have them all. If they were done for 1e/OD&D I have more than half. Including stuff from Judges Guild, Harn, etc...
Between all of those, and cities, towns, villages, etc... detailed/outlined in my Dungeon mags, I can pretty much provide a "homebrew", and many of the published settings, with a map for any city, town, village location listed on the campaign map.
Now I just need to come up with an indexed list telling me which resource I want to use for which location in which setting I own.