Sargent County Museum issued the following announcement.
When the auditorium went down on the SC fairgrounds we had to save something. We chose to save the doors and hardware that have been there since it was a sales barn. The hardware is horseshoe shaped. The doors not sure when they were put on since they are old pocket doors from somewhere. They have been put up thanks to Marvin Olofson and they can be found when you enter BLD #4. If you have more history on them please reply.
Original source can be found here.