Referência documental:
SAA, Stadsarchief Amsterdam, NA 105/65v, Nots: J. F. Bruijningh. Contract (Commercial credit, Loan, Insurance) of Willem Schuijl, Steven Rachet, Nicolaes Malepart, Aert van Ceulen, Joris de Wilhem,Jacob Andries, Servaes Sermont, Anna Messinck, Pieter Leijnsen, Dirck Roel, Franchoijs van de Peere, Robbert de Sale, Arnoult Schuijl, Servaes Jacobs, Hendrick Thyboult, Michiel Corsselis, Jan van Erp, Rodrigo van Erp