Documentary reference:
SAA, Stadsarchief Amsterdam, NA 286/238v, Nots: F. van Banchem. Contract (Statement, Power of attorney) of Roelof Hendricksz, Jacob Adriaensz, Niesgen Jansz, Peter de Beer, Lenert de Beer, Diogo Ascensao, Dirck Pieterss, Anthonij Martijns, Niesgen Jans, Michiel Janss Tailor