In addition, a Jokos file (number 51906) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Rudolph Koker
Amsterdam, – Gross-Rosen,
Reached the age of 22 years
Occupation: Apprentice draughtsman
Person is in the National Database of Victims of Persecution