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The Abraham Houtkruijer familie with from left to right (top) Abraham Houtkruijer, Mariana Houtkruijer-Levie; (bottom) Julius Koperberg, Celina Koperberg-Houtkruijer, Mietje Houtkruijer-Klein.
The Abraham Houtkruijer family with from left to right (top): Helena Levie-Meijers, Abraham Houtkruijer, surviving son, Julius Koperberg, Manus Levie; (bottom row) Mariana Houtkruijer-Levie, Alexander Houtkruijer, Celina Koperberg-Houtkruijer
The Abraham Houtkruijer family with from left to right: Abraham Houtkruijer, Mietje Houtkruijer-Klein, Celina Koperberg-Houtkruijer; (bottom) Julius Koperberg.
Julius Philip Koperberg 1921 Felixarchief
Person is in the National Database of Victims of Persecution