This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Plan des Stollens. en Drawing of the tunnel leading to the mine sprung in front of Petersburg Va July library cornell edu moawarcc moawaridno waronode waro Afrm framesetview imageseq page rootsize The War of the Rebellion Compilation of the Official Records of the Union and Confederate Armies United States War Dept PDUSGov PDold