Thanks for the comments, more to come.
You are welcome to the barrel technique. I made it fast but once it is set, gently sand the edges to make it a bit rounder before you place the bands around it. I did not do it this way on this build but it still came out okay.
I have been to that web site on my research. It seems all Conestogas were not the same. The style depended on where you bought it but they all had that trademark of a conestoga; The curved side rails and the overextended canvas top set-up.
Now on to the build...
Found a use for old CDs. they made good round templates. That last pic looks like a bunch of audio headsets. Well this is it for now, but there is more to come. Already planning on my next carriage, what will it be?