Referencia documental:
SAA, Stadsarchief Amsterdam, NA 33/390v, Nots: Lieven Heylinc. Contract (Power of attorney, Agreement) of Cornelis Snellinck, Hieronimus de Vader, Vincent van Hove, Hendrick Uijlens, Willem Willemsz, Willem Aertsz, Hillebrand den Otter,Marten Papenbroeck, jacques de Mayer, Jasper Basiliers de Jonge