
Until recently, the Clam Point neighborhood of Dorchester was called Harrison Square. The name commemorated President William Henry Harrison’s visit to Dorchester during the presidential campaign of 1840 and honored his memory, as he died of pneumonia shortly after taking office. Development in the neighborhood was initiated following the arrival of the Old Colony Railroad depot (1844). When rail service to Harrison Square was discontinued in 1957, the Harrison name began to fade from the memories of area inhabitants. The name “Clam Point” is said to have been coined during the 1970s by realtors intent on touting the area as a desirable coastal community of antique homes, it stuck. Likely the oldest extant house in the neighborhood (built before the railroad depot) is this house on Mill Street, constructed as a double-house around 1830 for brothers Elisha and John Preston. The vernacular, late-Federal style house has later shed dormers and lancet windows in the side gables. The Preston’s land holdings and sale before the Civil War led to much of the later development in the neighborhood.