A primo pensiero for the altarpiece of 1735 for the Capuchin church, Parma now in the Galleria Nazionale, A. Morassi, A Complete Catalogue of the Paintings of G.B. Tiepolo, London, 1962, fig. 120. Two further studies for the picture are in the Albertina, A. Stix and Fröhlich-Bum, Die Zeichnung der Venezianischen Schule, Vienna, 1926, nos. 303-4, both illustrated. A modello is in the Galleria Sabauda, Morassi, op.cit., fig. 117