Marianne Beetz was a daughter of Salomon Beetz and Klara Polak. She was married to Hartog de Liever. The couple had two unmarried children, Klara and Salomon. The son Salomon de Liever was a sorter.
K. Ribbens, Zullen we nog terugkeren
. De jodenvervolging in Amersfoort tijdens de Tweede Wereldoorlog (Amersfoort 2002) 158-159 and 168-169
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