This book is an excellent source for historians, art historians and all interested people. Not only does it explain the materials and techniques for the production of statues (such as bronze and marble), memorials and paintings, but it also supports the explanations with beautiful illustrations. The title is a little bit deceptive: although it is about the Vatican museums, a range of subject matters, a description of materials and the richness of historic facts doesn't allow me to associate this book with one single collection. I would call it "a short history of the world as portrayed in the Vatican museums". Brilliant!