The ever increasing art historical attention being paid to the School of Leonardo lies at the root of this volume published almost sixty years after Suida's classic treatment of the subject. This is the first time since then that Lombard art of Leonardesque inspiration has been the object of a systematic analysis embracing a period of around half a century starting from 1490. The essays opening the volume provide an overview dealing with the environment, the organisation and the working practices of Leonardo's atelier and the problems faced by historians, whilst each artist is discussed in a critical profile that, taking into account the most recent academic research, acts a brief but up-to-date monograph.