British Museum website: "Aegidius Sadeler II engraved a copy in reverse (Hollstein 212); see K. Ertz, "Jan Brueghel der Ältere: Die Gemälde", Cologne, 1979, p.108. fig.104. For an anonymous copy see also F,1.20.
Some of the rocks and the waterfall at left also occur in Jan Brueghel's drawing of Tivoli, in Leiden University Library Print Room, inv.no.PK-T-AW-1240. The imaginary landscape in the present sheet is clearly composed from several elements, some of which were drawn from life by Brueghel. A comparable drawing by Jan Brueghel I, showing St Jerome, is in a private collection (190 x 280 mm; engraved in reverse, Hollstein 211; from the collections of PJ Mariette [sale, Paris, 15. Nov. 1775, lot 843 : 'la Vue d'un grand rocher, perce a plusieurs endroits, au pied duquel on voit un hermite en oraison : il est fait de la plume la plus fine, et est aussi lave d'indigo avec beaucoup d'art.' Bought Basan, Ff.95] and de Joubert [sale, Paris, 21 Jan 1793]).
For other preparatory drawings for engravings, see M. Winner, 'Zeichnungen des Älteren Jan Brueghel', in Jahrbuch der Berliner Museen 3 (1961), Berlin, 1961, pp.198-200."