37 Main Street, located on the East Side of the Great Fire District, was originally known as the Fred F. Thomas building. Though altered in 1999, it retains its original historical character and compliments the style of the Rockland, Thomaston and Camden Street Railway Waiting Room to the north and other buildings in the district.
The building has a flat roof and clapboard siding, with large wooden windows framing a door in the storefront, with transoms above each. The rear of the building extends out over the catch basin created by the Montgomery Dam and rests on wood pilings above Megunticook River Falls. The rear first story of the building has a cluster pattern of casement windows similar to a Palladian style. There is a tall picture window on each end, with a pair of narrow casement windows on either side of a large picture window in the center. Six small, square casement windows open across the bottom of the center casement and three horizontal windows rest above the center of the window pattern. The second story has sliding glass doors with a row of small windows above that open to a deck overlooking the falls and Camden Harbor.
Built in 1905, the Fred Thomas building was originally a humble one story restaurant called “Two by Twice” and was built at the end of the streetcar line. It was his second restaurant. In 1920, he converted the restaurant into a cash grocery store; it became an A&P grocery store in 1928. In the 1950s and 1960s, the building was owned by Hal Nash, and called Nash’s Market.
In 1985, the Camden Deli was opened in the building. The business was owned by three different owners before being purchased by the Rothwell family in 1992. In 1999, a second story was added which was carefully constructed to maintain the historical integrity and preserve the aesthetic of the Great Fire District.