After a tip-off, two members of the Kolonne Henneicke found eight Jewish people hiding in the basement of the premises at 61 Amstel in Amsterdam: Abraham Rubens and his wife Elisabeth Aap, Gerrit Vandien and his wife Rachel Kokernoot, Samson Koopman, his wife Alida Hijman and their son Emanuel and Theresia Kroonenburg.
A. van Liempt, Kopgeld. Nederlandse premiejagers op zoek naar joden, 1943 (Amsterdam 2002) 174
Biography