SAA, Stadsarchief Amsterdam, NA 47/6, Nots: L. Heijlinc. Contract (Power of attorney, comercial credit) of Adam Hulscher, Hendrik Hulscher, Hans de Schot, Fernando Salvador, Thomas van de Walle, Evert Hulscher
SAA, Stadsarchief Amsterdam, NA 47/6, Nots: L. Heijlinc. Contract (Power of attorney, comercial credit) of Adam Hulscher, Hendrik Hulscher, Hans de Schot, Fernando Salvador, Thomas van de Walle, Evert Hulscher