The bell in St. John's steeple weighs nearly 1,000 pounds (450 kg). It was cast by Paul Revere's son, Joseph, at his Boston foundry in August 1822 and installed at St. John's on November 30, 1822. President James Monroe authorized a $100 contribution of public funds toward the purchase of this church bell, which also served as an alarm bell for the neighborhoods and public buildings in the vicinity of the church.