Documentary reference:
SAA, Stadsarchief Amsterdam, NA 35/131v, Nots: L. Heijlinc. Contract (Statement, Power of attorney, Commercial credit) of Assuerus van Blocklant, Joachim Dircksz, Allert Hendricksz, Barent Sas, Hendrick Gijsbertsz, Cornelis Snellick, Jacques de Meyer, Hendrick Harmensz