1st Internship of Christiaan Jacobus Blok1st Internship of Johan Ferdinand Blok1st Internship of Jonas J. Fransman1st Internship of Karel Frederik van Dalfsen1st Internship of Hendrikus Christianus Johannes Forsman1st Internship of Petrus Josephus Groote1st Internship of Wilhelmus Antonius Jansen3th Internship of Martinus Huis in 't Veld1st Internship of Louis Franciscus Kerstens2nd Internship of Israel de Machtige2nd Internship of Cornelis H.W. Mater1st Internship of Hendrikus Jacobus Bernardus Melchers1st Internship of Abraham J. Nunes Nabarro2nd Internship of Herman Casper Frederik Ottersberg1st Internship of Johannes van Bentum2nd Internship of Johannes van Bentum1st Internship of Johannes Petrus Peyra1st Internship of Johan Hendrik Schmidt1st Internship of Henricus H. Schmidt1st Internship of Klaas Johannes Smit1st Internship of Arie Marie de Ruijter1st Internship of Jacobus Bernardus van der Veen2nd Internship of Willem Vennekool2nd Internship of Charles J. Soederhuijzen2nd Internship of Arnoldus de Soet1st Internship of Theodorus de Soet1st Internship of Johannes P. Webbers1st Internship of Petrus Cornelis Weerdenburg1st Internship of Jacobus Johannes van Wetteren1st Internship of Jan Bodeman1st Internship of Theodorus Blok3th Internship of Hendrikus Johannes in den Berken