Raye’s Mustard Mill Museum is a working stone-ground mustard mill and mustard shop in Eastport, Maine. The family began making mustard to compliment the local sardine industry.
Speaking of sardines, there is a Sardine Museum in Lubec, Maine — travel from the mustard museum either 38 miles by car, or only 4 miles by boat.

Acadian 1950s kitchen from the Pelletier-Marquis House Museum in St. Agatha, near Canada in upstate Maine
The Albert House in Madawaska, Maine property stayed in the Albert family from when it was granted to them by the King in 1786 until 1970. Now it is a museum and contains this early-1800s country kitchen.
Westwego Historical Society arranged a splendid early kitchen at the Westwego Historical Museum. See the kitchen picture on their website.