This cemetery has many historical features. One of them was the Massillon Bridge and there's a geocache commemorating it. The original bridge was built in 1895. There's a lot of history about the Massillon Bridge Company and you can read about it here if you like.
Ancient Indian trail. At one time an Indian trail skirted the forest and ran along the Des Plaines river. I like to imagine the Indians from another era walking along the same ground that we were standing on. I just think that's pretty cool.
The cemetery has several other historical markers including:
Civil War General William Sooy Smith
Graves of two children lost in the 1903 Iroquois Theater Fire
Personally I enjoy doing the cemetery caches because they are filled with local history. As long as the geocaches are placed with respect and don't disturb the graves or anybody visiting them, then I don't see a problem.