Isak Elkan van Polen was the eldest of the two sons of Izak van Polen and Eva van Berg. He was born in Amsterdam on 22 July 1905. After 6 years of primary school, Izak Elkan completed a 3-year course at a business school, became an office clerk in a paper trade and later a traveling salesman and wholesaler of paper products.
He was also approved for the National Militia; he was conscripted into th…