Book excerpt: Published to accompany the opening of a major new expansion to Tate Modern in summer 2016, this handbook offers a fascinating look at the gallery's acclaimed and growing collection of international modern and contemporary art. An essay by Frances Morris summarises the history of the collection offering a unique insight into the considerations involved in building and shaping a national collection. Matthew Gale describes some of the changing themes in the gallery displays. The A-Z section of artists includes, not only many of the most popular works in the collection, such as Matisse's 'The snail' or Dalí's 'Lobster telephone', but also features recent acquisitions from across the world. More than simply a guide to one of the most important museums in its field, the book is also an invaluable tool to the understanding of modern art and artists.