Philip van Gelder was married to Elise Cohen. They lived on the Lichtenvoordestraat in Aalten. On 10 April 1943 they were taken by taxi from Aalten to Westerbork, from where they were deported to Sobibor. Philip van Gelder and Elise Cohen were foster parents of Joseph Backs.
P. Lurvink, De joodse gemeente in Aalten. Een geschiedenis 1630-1945 (Zutphen 1991) 191
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