1st Internship of Hendrikus van Dalfsen5e Internship of Machiel Hillesum1st Internship of Johannes C. Kappelle1st Internship of Johannes H. te Nijl3th Internship of Hendrikus Wouterus Johannes van der Raaij1st Internship of Lena Hendrika Schuurman2nd Internship of Carl Ferdinand Rooke1st Internship of Petrus de Soet1st Internship of Willem Zellerhof1st Internship of Johanna P. Budde2nd Internship of Cornelis J. van Bruynzwaard