The Williamstown Railroad was incorporated on March 13, 1861.[1] Its backers were businessmen in Williamstown, New Jersey, who owned a glassworks. The company constructed a 9-mile (14 km) from Williamstown to Atco, New Jersey, where it connected with the Camden and Atlantic Railroad. This line opened in October 1872. Plans to extend the line west to Glassboro, New Jersey, were not realized.[2]
The railroad company entered bankruptcy in November 1881. The Philadelphia and Reading Railroad took control in October 1883, reorganized the company as the Williamstown and Delaware River Railroad, and completed the extension to Glassboro.[2][3] The Reading-controlled 3 ft 6 in (1,067 mm) Philadelphia and Atlantic City Railway crossed the Williamstown at Williamstown Junction, about 1.6 miles (2.6 km) west of Atco. Once the Philadelphia and Atlantic City was converted to standard gauge in 1884 the importance of the Williamstown branch diminished.[4] The Pennsylvania-Reading Seashore Lines abandoned the branch between Williamstown and Williamstown Junction in 1934 and between Williamstown Junction and Atco in 1942.[5]
Coxey, William J.; Kranefeld, James E. (2007). The Reading Seashore Lines: A Pictorial Documentary of the Atlantic City Railroad. Palmyra, New Jersey: West Jersey Chapter, National Railway Historical Society.