battle. Moreover, based on the diameter of the preserved section of trunk (about ) he estimated the age of the tree at the time that it was blown over at no more than 80 years, and therefore asserts that it could not have been growing at the time of the battle. Nevertheless, the site at 18th Street and Prairie Avenue has become the location traditionally associated with the battle, and on the battle's 197th anniversary in 2009, the Chicago Park District, the Prairie District Neighborhood Alliance and other community partners dedicated "Battle of Fort Dearborn Park" near the site at 18th Street and Calumet Avenue. Monuments In 1893, George Pullman had a sculpture he had commissioned from Carl Rohl-Smith erected near his house. It portrays the rescue of Margaret Helm, the stepdaughter of Chicago resident John Kinzie and wife of Lt. Linai Taliaferro Helm, by Potawatomi chief Black Partridge, who led her and some others to Lake Michigan and helped her escape by boat. The monument was moved to the lobby of the Chicago Historical Society in 1931. In the 1970s, however, Native American groups protested the display of the monument, and it was removed. In the 1990s, the statue was reinstalled near 18th Street and Prairie Avenue, close to its original site, at the time of the revival of the Prairie Avenue Historic District. It was later removed for conservation reasons by the Office of Public Art of the Chicago Department of Cultural Affairs. There are some efforts to reinstall the monument, but it is meeting resistance from the Chicago American Indian Center. The battle is also memorialized with a sculpture by Henry Hering called Defense that is located on the south western tender's house of the Michigan Avenue Bridge (which partially covers the site of Fort Dearborn). There are also memorials in Chicago to individuals who fought in the battle. William Wells is commemorated in the naming of Wells Street, a north–south street and part of the original 1830 58-block plat of Chicago, while Nathan Heald is commemorated in the naming of Heald Square. Ronan Park on the city's Far North Side honors Ensign George Ronan, who was the first West Point graduate to die in battle. See also List of battles fought in Illinois Notes and references Notes References Bibliography History of Chicago Wars involving Illinois Pre-statehood history of Illinois Battles of the War of 1812 in