. The river separates Port Huron Michigan from Sarnia, Ontario Canada. Beautiful example of one of Boeings finest. Only disappointment was it did not go inverted even once, no figure-eight's, nor clover-leafs
...what's with that? Think they were still working on "stunt trim", ....thought I saw a clear trim tab on the right wing. Was running four stroke power also, ...Pratt and W something or other. 
Tony