I've been visiting this board for some time but never posted. However, seeing another person from Wichita has inspired me to post some additional information on the gravesite.
I too went to visit this site about 3 years ago. I was lucky to actually talk to a caretaker who knew right where it was. When I went, there was something quite odd at the base of the tombstone: the remains of an older and smaller tombstone. At first glance, it appeared to be rocks but then I saw letters that spelled out Toler, I was able to piece together most of what I am assuming was his father's tombstone. I know that he was buried next to his father, so I assume a larger one replaced the original. But it was odd that it was just left there. It may still be there, grown over with weeds or covered with dirt. I would hope some other visitor just didn't walk off with it.
Slight clarification from my earlier observation: I managed to shoot and clarify the seal on top of the tombstone,and it actually reads "Erected by the Woodmen of the World." As I don't recall any mention of the senior Toler being in the lumber business, this is a bit confusion.
I also tried piecing together the smaller, broken stone, but marble tends to weather poorly and I wasn't able to read the results.