Preparatory drawing by Hans Witdoeck now in Le Gallerie degli Uffizi (Florence); For more information, see British Museum, collection online (inv. nr. R,3.93 and inv. nr. 1841,0809.13) and Rijksmuseum, collection online (inv. nr. RP-P-OB-61.119); A copy after this engraving is also present in the Fondo Antico, in the same volume: Stampe.V.111(6).