I took various pics of the sculpture and the various dedications with maps carved around the area. The last picture is of the last stop in Detroit on the "underground railroad", Second Baptist Church. Beyond Detroit freed slaves would then go further into Canada to the unknown reality known as Freedom. The sculpture was along the Detroit Riverwalk, but Second Baptist is located at 441 Monroe Street in Detroit's Greektown neighborhood.
BTW, I got some video of the Riverwalk ready to go, the next step is to upload the vid and then post it here. Hopefully I can get the rendering right so that it will play properly thru either YouTube or Blip.tv.