I visited the Maxwell grave when redoing Dornick Hills years ago. I also made the stop at the Morris graves in St. Andrews. After reading that Tillie was buried in Toledo, and having relatives there, I tried to find his grave, only to later find out that article was wrong.
After reading Brad's book, which had a letter from his final address (living with his daughter) I went by the home where he presumably died. The neighborhood is, shall we say, not as elegant as it was when he lived there (former Uptown neighborhood, now just a hood) and I didn't stay long, as the lady and and her sons who lived there couldn't understand why I was snapping photos of their house, and I didn't think the explanation would help.
As to my actual work, I have uncovered civil war stuff so I know some folks have died on the grounds of my golf course in Atlanta. I have always wanted to do a bunker shaped like a buried body (more when working in the suburbs of Chicago) to suggest a buried body, but no one has allowed that yet.