The National Gallery of Art collection of Italian fifteenth-century paintings, the finest in any American museum, has not been published in its entirety since the 1979 Catalogue of Italian Paintings by Fern Rusk Shapley. Among the altarpieces, devotional works, portraits, and allegorical scenes are many world-famous masterpieces. In addition to Leonardo's Ginevra de' Benci and the Adoration of the Magi by Fra Angelico and Fra Filippo Lippi, paintings...