Hijman Velmans worked as a butler in the Apeldoornse Bos, where he started working on 27 April 1942.
Municipal Archives Apeldoorn, list of employees of the Apeldoornsche Bosch
In addition, a Jokos file (number 51614) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.