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David Bishop was a New London builder who started a grocery, lumber and building business with his brothers. In 1872, he purchased a 1796 gambrel-roofed house at 49 Washington Street and raised the building, adding a new first floor for his grocery business. He also lengthened the windows and added dormers and a bay window. The building was restored in the 1990s and the ground floor now houses the offices of New London Landmarks, while the upper level contains two apartments.