The appearance of a facsimile volume (costing around six thousand dollars) of the celebrated, partially destroyed “Turin-Milan Hours” (Turin, Museo Civico d’Arte Antico, inv. no. 47) is reason enough to rejoice for scholars, who would otherwise probably never have close contact with these celebrated miniatures, some of which (controversially) have been attributed to Jan van Eyck. Now there is still more reason for celebration: the accompanying commentary volume has appeared in three languages (nothing like having a Swiss publisher!). In addition to providing basic, small illustrations of all the images in the original manuscript (including the Paris folios of what was known in the inventories of Jean de Berry as the “Très Belles Heures de Notre-Dame”), this volume also has comparative photos, e.g. of “Eyckian” comparisons, as well as some images made with infrared reflectography, chiefly to accompany the longest essay of the volume, by Anne Hagopian van Buren. To have van Buren and Marrow, America’s two leading manuscript specialists of the period, as well as Pettenati, involved in this evaluation makes this Commentary truly a volume of lasting importance. Specialists with this manuscript will know of its century-long vicissitudes, which parallel the checkered history of its making over a...