Angelo Quaglio (1829-1890), Sketch for a curtain (around 1870). Water-colour on paper, 27,9 x 37,3 cm. Cologne, Institut für Theaterwissen-schaft der Universität. «Angelo Quaglio belonged to a artists family, it is native to Lake Como and active in Germany since the beginning of the seventeenth century, which gave to the theatre scenographers and architects.» V. Morpurgo, op. cit., page 126.
