拍品专文
A finished study for Gaetano's picture of the subject in a private collection, P. Bagni, I Gandolfi, Milan, 1992, no. 402. Another, quite rapid, study for the picture is in the Stiftung Ratjen, Vaduz, P. Bagni, op. cit., no. 403, exhibited in Munich and elsewhere, Italienusche Zeichnungen des 16.-18. Jahrhunderts, 1977, no. 80.