Raum, John O. The History of New Jersey: From Its Earliest Settlement to the Present Time, Volume 1, pp. 276–7. J. E. Potter and company, 1877. Accessed July 15, 2013. "Trenton the capitol of the State, as well as the seat of justice of the county of Mercer, is beautifully located on the east bank of the Delaware, at the head of tide navigation. Here is located the State Capitol, built in 1793, enlarged in 1845 and 1865, and again in 1871. The State Prison, State Arsenal, State Normal and Model schools are also located here. The city has 7 wards. Its population in 1850, was 6,461; in 1860, 17,228; and in 1870, 22,874"
