Donated in 1922 to the Louvre by Leon Bonnat, these 23 drawings are one of the best ensembles of life studies of a model by a 15th-century Florentine artist. Despite being named after Pollaiuolo, modern critics have attributed it to Maso Finiguerra, goldsmith and niellist, but known to posterity for being credited by Vasari as the inventor of engraving. The booklet is reproduced here for the first time as a quasi-facsimile. The commentary that accompanies it presents the profile of the two artists and the relationship of the carnet to workshop practices. The analysis of each individual drawing focuses on the images, materials and techniques.