2nd Internship of Armand Eljon1st Internship of Joachim Hartog1st Internship of Willem Hartog1st Internship of Estella Gobetz1st Internship of Jozeph Hartog1st Internship of Joseph Koekoek1st Internship of Philip Mok1st Internship of Isaac Joseph Bierman1st Internship of Wolf Parijs1st Internship of Isidoor Polak1st Internship of Jacob van Ullem1st Internship of Maurits Wijnschenk1st Internship of Levie Kok2nd Internship of Levie Kok1st Internship of Barent Koopman1st Internship of Hartog Meljado2nd Internship of Hartog Meljado1st Internship of Joseph Mouw