In addition, Jokos files (numbers 31303, 31305) on this household or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos files reveal that a claim was lodged for compensation for looted securities or bonds. (W-claim, number C20; C50/56; C54; C58 en C60/262).