Wallace, Robert, 1919- The world of Leonardo, 1452-1519, - New York, Time, inc. [1966] - 192 p. illus. (part col.) 32 cm. - Time-Life library of art . Bibliography: p. 187-188. LCCN: 66024104 Subjects--Personal Names: Leonardo, da Vinci, 1452-1519. LC Class. No.: ND623.L5 / W32 Dewey Class. No.: 759.5