Rod Dyke

Trying to identify this car by what small data that is given in the attached photo! I'm a genealogist whose relative had this welding shop in Bismarck, North Dakota. So, what can anyone give an idea of the car and year? I'm trying to date this photo and only have the back end of what looks like a possible Woody Wagon (?) ... Note what looks like heavy wood trim and fabric top (?). Any help would be very much appreciated!