We stopped to eat lunch across the road from this place at an old family restaurant.
It’s located on Route 1 in Perry Maine, and appears to be for sale.
Some of Quoddy’s classic moccasins
In 1909 Harry Smith Shorey started making his own shoes in Downeast Maine. Today, the tradition continues in Perry , on the shores of Passamaquoddy Bay, smack dab on the 45th parallel; half-way to the North Pole and as far east as you can travel in the continental U.S.
Source: Quoddy History
For more info, view the Quoddy Wigwam Gift Shop website (last updated 2004) The following interior photos are sourced from that website
Diner Hunter 
Love that floor tile pattern! Definitely looks original 1950s and was never tiled or carpeted over the top.
Hopefully someone comes along to buy it. It’s much too interesting a building to get bulldozed.
I was in Perry, Maine in the early 1970’s to visit family. I was told that relatives owned an operated the business. My aunt was born Clark. I would like to get more information. Contacts for anyone I could speak too.