Vincent van Gogh's Sunflowers are seen by many as icons of Western European art. Two of these masterpieces - the first version painted in August 1888 (The National Gallery, London) and the painting made after it in January 1889 (Van Gogh Museum, Amsterdam) - have been the subject of a detailed comparison by an interdisciplinary team of experts. The pictures were examined in unprecedented depth using a broad array of techniques, including state-of-the-art, non-invasive imaging analytical methods, to look closely at and under the paint surface. Not only the making, but also the subsequent history of the works was reconstructed, including later campaigns of restoration. The study's conclusions are set out in this book, along with the fascinating genesis of the paintings and the sunflower's special significance to Van Gogh. More than 30 authors, all specialists in the field of conservation, conservation science and art history, have contributed to the research and publication presenting the outcomes of this unique project.

Painted in 1468, Saint Michael Triumphant over the Devil is the first documented work by Bartolome Bermejo (c. 1440-c. 1501), a 15th-century Spanish artist by whom only about 20 paintings are known. Acquired by the National Gallery in 1995, the painting depicts the Archangel Michael defeating Satan, in the form of a hybrid monster, with Antoni Joan, feudal lord of Tous, kneeling nearby. The work is remarkable for its mastery of the oil-painting technique, influenced by Netherlandish painting and unrivaled by Bermejo's contemporaries in Spain. Following the painting's detailed technical examination and restoration, the authors provide a fascinating account of this rare work, accompanied by high quality new photography and placing the painting in the broader context of Bermejo's career in 15th-century Aragon.