, 20 West Montgomery St. The lecture, he says, highlights "the interpretation of the history of slavery at historic sites across the nation." Nell Ziehl from the National Trust for Historic Preservation discusses challenges faced by the many sites maintained by the Trust. Ebenezer A.M.E. Church, according to Heritage Baltimore, "has ties to slavery and the Civil War. Constructed in 1865, it is the oldest standing church built by African Americans in Baltimore, and the congregation, dating to 1836, was active in the helping escaping slaves for many years." It's part of Free Fall Baltimore. You don't need an RSVP, so just show up.