Hello tkfishing,,,
I live here on the west side of Indy and have hunted just about all the parks here in town, and a few outside of town. I have never been told I couldn't hunt. Some state parks are off limits, but you have to ask... I have hunted at Eagle Creek State Park, and they don't mind a bit, unless you leave holes in the ground... Not sure where your at, some small towns frown on people doing anything, but walking in their parks. I have heard you can't hunt some of the parks in Plainfield, but I'm not really sure about that...
Here is a link to the Indiana Historical Societies web site:
http://images.indianahistory.org/cdm4/search.php
This link will take you to a search page for pics,,, just type in parks, schools, playgrounds, fishing, or just about anything you can think of and if there is a pic of it, it will take you there... It's a good site for finding out where a lot of the older stuff in the state was at.
You may still have to find out exactally where it was, but it's a good place to start... You might even try to search for things around your area, such as the town you live in,,, If there are any historical significance to them they will probably be on there...
Good luck & Happy hunting~