VIOLIN of Gasparo da Sal?(Gasparo Bertolotti 1540-1609). The maker of Brescia is often lumped together in Cremona by Antonio Stradivari and Giuseppe Guarneri del Ges? and at his own pupil Giovanni Paolo Maggini; which are considered; albeit with subtle differences in personal style; the founders of modern violin making. Table with dimensioned drawing in the Treaty "Italian Violin Makers" of the historical musicologist Czech Karel Jalovec; which boasts a wide bibliographic production focused on the study of violin making violin. Ed Hamlyn; London 1952