Referência documental:
SAA, Stadsarchief Amsterdam, NA 200/538v- 584v, Nots: J. F. Bruijningh. Contract (Statement, Insurance, Bottomry, Commercial credit) of Laurens Joosten Baeck, Lenert de Beer, Ijsbrant Cornelisz Spoors, Manuel Fernandes Barros, Antonio Gomes, Gerrit Claessen Leijenaert, Hendrick van Bronckorst, Nicolaes du Gardins, Jasper Willemsen