Summary: Photograph from the main eastern theater of war, Grant's Wilderness Campaign, May-June 1864.
Caption from negative sleeve:
A council of war at Massaponax Church, Va., 21sy May, 1864.
Gen. Ulysses S. Grant, Gen. George G. Meade, Assistant Secretary of War Charles A. Dana, and numerous staff officers
Found this 6 minute video on YouTube. It is video from the Gettysburg Moments Facebook page in 2013 of then and now photos done by our own Gettysburg Greg. Some of the "then photos" are well known artists' paintings.