Salomon Polak was a son of Gerrit Polak and his first wife Flora Tas.
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Salomon Polak married in Den Haag on 8 July 1941 to Esther Adelheid Wrazlowsky, daughter of Mozes Wrazlowsky and Kaatje Stibbe. She was born in Den Bosch but after the death of her father residing in Den Haag.
City Archive of Amsterdam, archive card of Salomon Polak.
In addition, a Jokos file (number 18565) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.