1st Internship of Adolp N. Braadbaart1st Internship of Louis van der Glas1st Internship of Levie Blits1st Internship of Coenraad Leeseman1st Internship of Eliazer Koster1st Internship of David van Moppes1st Internship of Johannes Leonardus van Baarle2nd Internship of Jacob de Beer1st Internship of Joseph Stranders2nd Internship of Marcus Waterman1st Internship of Jacques Fr Bels