For Black History Month, the National Constitution Center features daily self-guided tours, special shows and exhibits highlighting the museum’s vast collection of artifacts, including a signed copy of the Emancipation Proclamation. Don’t miss the return of The Four Harriets of History, a pop-up program exploring the lives of Harriet Tubman, Harriet Robinson Scott, Harriet Jacobs and Harriet Beecher Stowe — four women who fought to overturn slavery in the United States through direct action. General admission tickets are required.