2nd Internship of Salomon Dreese3th Internship of Jacob Deutz2nd Internship of Juda Kater1st Internship of Samuel Polak1st Internship of Salomon Polak1st Internship of Jonas Polak1st Internship of Samuel Polak1st Internship of Hijman Polak1st Internship of Abraham Polak1st Internship of Barend Polak3th Internship of Jonas Meents3th Internship of Abraham Spanjar1st Internship of Gerrit Speijer1st Internship of Abraham Speijer