Family tree Helmantel » Sources » Wikipedia (Otto Frank); "Anne Frank: Silent Witnesses. Reminders of a Jewish girl's life" van Ronald Wilfred Jansen; http://afdr.eu.pn/people.htm
Source description
Wikipedia (Otto Frank); "Anne Frank: Silent Witnesses. Reminders of a Jewish girl's life" van Ronald Wilfred Jansen; http://afdr.eu.pn/people.htm
Information from this source
Information concerning Michael Frank (from 1886 till 1909)
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