The War For the Union – A Slave Pen in Alexandria Tom Faces & Places of Yesterday Tue Jul 2nd, 2013 3 Comments This is an incredible stereographic card, taken during the Civil War. It’s a powerful image of an Alexandria slave pen. Photograph shows soldiers inside prison area where slaves were held. Source: Library of Congress Amazon.com Widgets email You may also like...The Marshall House in AlexandriaGreat Civil War Photographs of WashingtonWhy Is It Named Arlington?1909 Walter Johnson Baseball CardWalking Tour of SwampoodleFrozen TropicsMorning LinksWashington City Paper Site FeedAlexandria Police Played Big Role in Severance ArrestNBC4 Washington - Top StoriesCivil War Map of Camp Patterson ParkGhosts of Baltimore Tags 1860s, Alexandria VA, slaves, The Civil War spottieottie Any idea where in Alexandria this was? Jarkress Gray house, still standing at 1315 duke St. Slave pens were to either side of the house. See: http://www.loc.gov/pictures/resource/cwpbh.03340/ Tania Is this is the same slave pen referred to in the book 12 Years a Slave?