Elias Koopman, a son of Eliazer Koopman and Mijntje Soep, married in Amsterdam on 20 May 1920 to Sara Swaab, a daughter of Meijer Swaab and Raatje Gerritse.
website www.wiewaswie.nl.
A few postcards dated 6 July 1943 remain from Elias Koopman. Elias Koopman reports that he is on the train 'en route to an unknown destination.'
Jewish Historical Museum, Documents collection, inv.nr 4581 and 4582