There is a historic outhouse available for the asking in New Jersey. Someone's Aunt has just sold her old farm in NJ to a developer. It is in very good condition, having been rebuilt 20 yrs or so ago. If you are interested, you might be able to get it for the cost of towing it home.
Additional details are below.
It has a pit door in back for cleaning. Color red, a small window on one side, no cutout design in the door. Very sound and sturdy. Bob would bring it back to his farm in Maine if he had some way of transporting it.