Years ago I went to several different libarys in my area and checked out books about the history of cities,towns around me.While reading them, I was looking for schools,farms ,whatever caught my attention and would write this info down. I had quite the list. Next I drove to these locations, alot of driving. Most are now paved over wt a buisness, more than half. All n all I found 3 schools that are now someones house. Got permission to hunt 1. Didnt find a thing. lol
Really didnt do me much good other than I know alot about the area I live.
I also found several old maps, good luck witht them. They are extremely crude from long ago. Just a bunch of lines wt no names, schools and P.O.s marked with a huge smudge that covers a half mile.
Hope you have more luck than me.