Drawing in Early Renaissance ItalybyFrancis Ames‐Lewis, New Haven and London: Yale University Press, 1981, 196 pp., 182 ills, 8 colour pls, £15The Draftsman's Eye — Late Renaissance Schools and StylesbyEdward J. Olszewski, Cleveland: Indiana University Press for The Cleveland Museum of Art, 1981, 177 pp., 172 ills, £16.50European Drawings, 1375–1825byCara B. DenisonandHelen B. Mules, New York, Oxford and Toronto: Oxford University Press for the Pierpont Morgan Library, 1981, 291 pp., 143 ills, 8 colour