My father and sister are going to Indiana this weekend , I couldn't go ( work , waiting on payday , and deer season) but I did ask my father if he could keep an eye out for some stone I may be able to use .
I have family up there , aunt and uncle in law plus cousins , most live in the northern part . My aunt may have some chert in a rock garden or around somewhere I hope , I went up there a couple of years ago but wasn't thinking about making my own arrow heads , wish I had we were there for several days . He said he would keep an eye out for some on their way up also ( dad doesn't tend to stop unless he has to ).