1st Internship of Johannes Hermanus Breuker1st Internship of Godefridus Daame1st Internship of Adriaan Pieter Hasselman2nd Internship of August Samuel Kaiser1st Internship of Jacobus Johannes Wilhelmus Alberts1st Internship of Hermanus A.A.J. Hilekes1st Internship of Jan Coenraad Konz2nd Internship of Gerardus Jacobus Noest4th Internship of Gerardus Jacobus Noest1st Internship of Louis Marinus Muller1st Internship of Joseph A.J. Becker1st Internship of Christiaan L.J. Berkhout1st Internship of Hendrik J. Sickmann2nd Internship of Hendrik J. Sickmann1st Internship of Antonius Hendrikus Sickman1st Internship of Johannes Gerardus Sickman1st Internship of Johann H. Sickmann2nd Internship of Jan Veenekamp2nd Internship of Pieter Vaartjes1st Internship of Jacobus Ignatius Starreveld1st Internship of Johannes J.L. Spiekerman2nd Internship of Christiaan J.J. de Vries1st Internship of Pieter Antonie van Zutphen1st Internship of Fredericus Jacobus Cram1st Internship of Jan Isaac Bijvank