This is a picture from an anniversary celebration for Levi and Matilde Hartmann, maybe about 1930. Their entire family is present. Front (L-R) Gertrude Hartmann, Bruno Hartmann, Matilde Hartmann, Levi Hartmann, Lissa Hartmann. Middle row far right is Teresa Levor-Wolf. Back row, 2nd from right is Karl Lefor (Died NYC, 1966)
In addition, a Jokos file (number 53844) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.