2nd Internship of Petrus Cornelus Bos1st Internship of Johannes Jacobus Carolus Bos2nd Internship of Henri Hirschel1st Internship of Johannes Josephus Kempers1st Internship of Johannes Franciscus Beekman1st Internship of Petrus Johannes van der Linden1st Internship of Simon J.J Meyer2nd Internship of Arnoldus Richardus Offerman1st Internship of Louis Pierre Otten3th Internship of Jacobus Olij1st Internship of Cornelis Smid1st Internship of Douwe Smid1st Internship of Jan van Tilburg1st Internship of Arie van Tilburg1st Internship of Johannes H. v.d. Berg