As part of the celebration of Bunker Hill Day in 1903, the Liberty Bell was sent on a tour of the Boston area. The photograph at the left shows the "famous old tocsin" (as The Boston Globe described it) on the Bell's Somerville stop. As inconceivable as it seems now when concern for preservation of historic artifacts is paramount, the Liberty Bell was sent frequently to other cities for public display. While other relics of independence stayed in one location, they also were frequently available for public viewing in what would now be considered unsafe conditions. For example, an early copy of the Declaration of Independence and Washington's army commission were displayed in the Patent Office from 1841 until 1876, exposed to natural light and extreme humidity (by the Centennial visitors were beginning to remark on the faded and worn appearance). This visit to Boston was one of the Liberty Bell's last trips. After the Bell returned from 1915 International Exposition in San Francisco, the city government of Philadelphia (which then owned the Bell) decided the Bell should stay permanently in Philadelphia for safekeeping