Originally erected as a house, the building at 5 Gravel Street in Mystic has been the First Church of Christ Scientist since 1914. Various dates can be found for the construction of the original house. The church’s website states that it was built in 1782 by Josiah Kemp. The brochure “a Mystic Riverside Walking Adventure” indicates that the house was built by Capt. George Wolfe between 1815 and 1827. In the latter year, it was sold to his brother-in-law, Capt. William Kemp (1795-1840), who commanded sloops and schooners. The nomination for the Mystic River Historic District gives a date of 1820. Work began in 1918 to transform the building into a church and it was dedicated on August 30, 1919. A Sunday School and Child Care room were added in June 1962 and in 1975 the original dirt cellar, on the street level of the building, was converted into a Reading Room.