I bought the trailer ABQturtle posted
http://tnttt.com/viewtopic.php?t=40700
And I know it is a Arthur Sherman (Covered Wagon) design but not sure if it is a Covered Wagon. Covered Wagon moved there door to the side in 1935 and made them taller in 1935. It does have a original Model A tail light. It is 12' body x 5'3" interior height.
here is some pictures of it,
http://oldietrailer.shutterfly.com/