I've been going through a bunch of boxes retrieved from my family's storage unit, and recently stumbled on the most amazing thing! My DM binder from THE VERY FIRST D&D CAMPAIGN I RAN BACK IN HIGH SCHOOL!! This is vintage gaming gold from the days of 2e folks! Of course if I recall, the campaign lasted all of two or three sessions, but the world-building was pretty epic.
Here is a map and an airship drawing that I scanned from the binder for just a little taste of the stuff I unearthed. Check 'em out! I'll probably upload other bits I find as I get my old notebook reorganized. Who knows, I may try to incorporate some of this stuff into my current game.