1st Internship of Jacoba Chr F Bartelsman1st Internship of Johannes Faanhof2nd Internship of Johannes Faanhof1st Internship of Engelbertus Carolus Ensink1st Internship of Hendricus Jac. Faanhof2nd Internship of Hendricus Jac. Faanhof1st Internship of Willem Geesthuysen1st Internship of Andries Groenou1st Internship of Cornelis Gross2nd Internship of Karel P. v.d. Hoek1st Internship of Jan van Marle1st Internship of Jan Nieuwenhoff1st Internship of Franciscus L. Th. van der Meerendonk1st Internship of Cornelis Nicolaas Mol1st Internship of Wilhelm te Nuyl1st Internship of Johanna Catharina Moesenbroek2nd Internship of Leendert Barbé1st Internship of Gerrit Moret2nd Internship of Willem Frederik Schaefer1st Internship of Aron Troeder1st Internship of Johan Hendrik Timman1st Internship of Karel Christiaan Söhne3th Internship of Toers Frederik Franciscus Söhne1st Internship of Allegonda J. Bode1st Internship of Johannes Antonius van Zoolingen