From Nookipedia, the Animal Crossing wiki
The Classic Painting is a painting available in Animal Crossing. The Classic Painting is a copy of Emanuel Leutze's Washington Crossing the Delaware, painted in 1851. It depicts Washington's crossing of the Delaware River, part of a surprise attack against Hessian forces during the American Revolutionary War. Washington Crossing the Delaware is currently on display in the Metropolitan Museum of Art.
 Painting Information