Grainfield at the Edge of a Wood, also known as The Cornfield, is a 1648 etching by the Dutch Golden Age artist Jacob van Ruisdael. There are five versions known about the etching. The first state is at the British Museum in London. The second state, in which a few lines in the sky have been added, is at the Rijksmuseum in Amsterdam. On the later states "JvRuysdael" has been added by another hand than Jacob's. John Constable made a close pen and ink copy of it, including even the signature "JvRuysdael" and plate mark.