Heydenreich, Ludwig Heinrich. LEONARDO DA VINCI. 2 Vols: Text volume with 210 pp. and 2 tipped-in color plates; Plate volume with 242 b&w illustrations. Text in English. 4tos, cloth in slipcase. New York, Macmillan and Basel, Holbein, 1954.
Freitag 5466 cites 1956 edition.