Ray (webmaster) on 4/21/2014 5:47:30 PM:
A long time ago, I found the locations of all benches between Defiance and Marthasville, which you will see listed if you click any towns within that span, in the map at the top of the page.
I apologize for the incomplete information, but I never went back and tracked the location of benches on the other 220 miles of trail, and no one had really asked about it until now.
You might try the Mo Department of Revenue - since they sell naming rights to plaques on the benches, they might have a complete list.