Survey by John Vinal of “Plan of land and Buildings in the Vicinity of Frog Pond,” 1771, Courtesy of the City of Newburyport.

Survey by John Vinal of "Plan of land and Buildings in the Vicinity of Frog Pond," 1771, Courtesy of the City of Newburyport.

Survey by John Vinal of “Plan of land and Buildings in the Vicinity of Frog Pond,” 1771, Courtesy of the City of Newburyport.

Survey by John Vinal of “Plan of land and Buildings in the Vicinity of Frog Pond,” 1771, Courtesy of the City of Newburyport.