Back when i was Indiana i happened to get my hands on an old atlas ..... late 1800s, which showed a lot of info ... such as old home, roads, school house....... and railroad stops. I then compared it to an atlas say in the 50's. Even up North you can dig some very old stuff. Those old roads changed ....... old homes of course got tore down and they would become part of a farmers field. I preferred these type old home much more than i did one still standing. The ones still standing may have add ons and the dirt was often just moved over the yard. Also, you had all the nasty modern trash which was overwhelming to pick thru. The ones gone .... there were so many unusual items especially for horses and brass. Old marbles and toys were often eye balled. I found a lot of old coins.......even a couple jars with coins buried in the back area where i assume an old tree was. I found things like horse bleeders..... and of course targets dating back to the civil war like coat buttons. Many still wore their military cloth when they came home. Everyone like suspenders and hamonicas it seemed too. Old school houses payed off mostly with toys. Who had money or needed it there? There was like a school house every square mile and classes sometimes came down to the season crops. The one often over looked were Rail Road stops. Every small town had um. often difficult to hunt because of the iron......but the coins were there.... as was about anything in ones pocket.