This new edition of Zöllner's earlier published studies on Leonardo's work contains a new preface. The 2015 edition was issued in a smaller format than the 2007 publication (see entry in this database). NB: The catalogue raisonné also was reissued in 2018, with an new chapter on Leonardo's manuscripts. The introductory essays cover Leonardo's life and career. The texts are followed by the catalogue raisonné of the paintings, with a separate section on the graphic works. There are also appendices and a concordance for the drawings.