Jacob Kleef was a son of Levi Kleef and Roosje Marcus.
Stadsarchief Amsterdam, archiefkaart Jacob Kleef
Jacob Kleef took his own life under pressure of the circumstances.
NIOD, Records Joodse Raad, box 36d, letter dd. 2 October 1942
In addition, a Jokos file (number 3737) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting b…