ZOART MOTEL, Murdo SD
   

 

 

 

 

 

Oh to hell with paying that franchise fee. Fat lot of good. He didn't black out the CONGRESS logo on the sign, though. That would be too obvious.

A chrome postcard view, here, with a more modern sign.

The Anchor Inn could be it; the card says "Four blocks west of highway 83," which it is.