Referência documental:
SAA, Stadsarchief Amsterdam, NA 107/140-141, Nots: J. F. Bruijningh. Contract (Statement, Power of attorney, Insurance) of Christiaan Gillis, Wijnant Wijnantsen, Willem Willemsen, Hendrick Hendricksz, Cornelis Snellinck, Pieter Beltgens, Jan du Port, Isacq Pruijs