SAA, Stadsarchief Amsterdam, NA 79/15, Nots: J. F. Bruijningh. Contract (Power of attorney, Bill of exchange) of Griet Jan, Jan du Bois, Julian de la Court, Joseph de Fuentos
SAA, Stadsarchief Amsterdam, NA 79/15, Nots: J. F. Bruijningh. Contract (Power of attorney, Bill of exchange) of Griet Jan, Jan du Bois, Julian de la Court, Joseph de Fuentos