Because of the centrality of its location, the status of its residents, and the fact that urban slaves worked there across from the White House, the house now contains more material interpreting African American history. Among the compelling stories is that of Charlotte Dupuy, who in 1829 sued her master Henry Clay, then Secretary of State, for her freedom and that of her two children. While she lost her court case, Clay finally freed Dupuy and her daughter in 1840, and her son in 1844. A special exhibit on African American history through 1965 has recently been added to the museum and its website.