...; collection Jacob de Vos Jbzn (1803-78), Amsterdam (L. 1450); his widow, Abrahamina Henrietta de Vos-Wurfbain (1808-83), Amsterdam; sale, Jacob de Vos Jbzn, Amsterdam (C.F. Roos et al.), 22 May 1883 _sqq_., one of a pair in no. 478 (‘_Corneille Saftleven. Garçon jouant de la flûte.- Ruelle de petite ville. Deux dessins à la pierre noire, dont le premier est signé du monogramme et daté: 1665_.’), fl. 140, to William Pitcairn Knowles (1820-94), Rotterdam and Wiesbaden (L. 2643); his sale, Amsterdam (F. Muller), 25-26 June 1895, one of a pair in no. 581, with inv. no. RP-T-1902-A-4569, fl. 20 for both, to the dealer H.J. Valk for the Vereniging Rembrandt; from whom, fl. 23, to the museum (L. 2228), 1902