The National Gallery Companion Guide celebrates over 200 masterpieces from one of the finest art collections in the world. The reader is guided through the history of the Western European painting tradition, from the thirteenth to the twentieth centuries, with engaging commentaries that illuminate each artist's unique contribution.   This comprehensive, newly designed edition has been revised and expanded to feature recent acquisitions by Artemisia Gentileschi, Edgar Degas and Thomas Lawrence, alongside much-loved works by artists ranging from Leonardo and Raphael to Van Gogh and Picasso.