http://justacarguy.blogspot.com/2011/07/4-wheel-buckboard-with-smith-motor.html for the engineering drawings and other photos of hte Smith Motor wheel and 4 wheel buckboard
This is one photo from the "Good Dog Scrapbook" of Jim Linderman http://dulltooldimbulb.blogspot.com/2011/05/good-dog-scrapbook-by-jim-linderman-and.html