Megan Holmes’s beautifully-illustrated book on Fra Filippo Lippi sets a standard for the study of Florentine Renaissance art by demonstrating how much more remains to be done, even for an artist who has been the object of study for centuries. Florentine Renaissance art is, after all, one of the oldest fields of art history, and the bibliography is extensive. Writers since the late quattrocento have reveled in the beauty of the works, and already in...