Rare example of H. H. Lloyds Campaign Map of the Army of the Potomac. Published in 1865. These are pretty hard to find. Especially in this condition. This one is pretty much mint. This holds one map. You open the book and it unfolds to map showing the campaigns of the Army of the Potomac throughout Virginia, Maryland and Pennsylvania. It unfolds to a massive 50″ x 37″. Quite a unique piece. The binding is solid on this with the map in excellent condition. Really neat item!