4 tempat yang diperbarui Maret 22, 2012
4 tempat termasuk African Burial Ground National Monument, Charles H Wright Museum of African American History, Lincoln Memorial, Dr Martin Luther King Jr National Historic Site
11 tempat yang diperbarui
11 tempat termasuk African Burial Ground National Monument, Dr Martin Luther King Jr National Historic Site, Charles H Wright Museum of African American History, Dr Martin Luther King Jr National Historic Site