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As first built, this church was a plain meetinghouse, essentially a brick version of the earlier Old Stone Church nearby, with two tiers of windows and a U-shaped balcony within. In 1835 John Dunn designed and built a front addition that provided a vestibule and an interior stair to the balcony. He embellished his facade with Greek Revival lintels over the entrance and flanking windows and decorated the pediment with a rare bit of folk art, though the significance of its wavelike patterns is uncertain. An octagonal cupola on a square base rises above.