Like many historic roadside businesses, the Munger Moss Motel began as a sandwich shop on the original Route 66 near Devil's Elbow Bridge.  Relocation of the sandwich shop to Lebanon, Missouri happened after World War II which the new four-lane highway moved the traffic off the original route.

The business grew and cabins were added in 1946. The original 14-room cabin court is now 44-rooms.

The famous neon sign was restored in 2010. A matching grant by the National park Service helped pay for the sign's restoration.