Samuel Walvis was a son of Michel Walvis and Duifje Kat, living on the same address.
Stadsarchief Amsterdam, archiefkaart Samuel Walvis
Samuel Walvis joined the Hollandia-Kattenburg textile factory in Amsterdam on 19 February 1940. On Wednesday, 11 November 1942, around 4:30 PM, Willy Lages conducted the Sicherheitspolizei raid on the Hollandia factories. All exits were blocked and the Jewish staff members were taken away that evening. Photographs of all workers taken away that evening, as well as those deported previously, appear in the 'Boek der tranen' [Book of tears].
Jewish Historical Museum, Documents collection, inv.nr B1376, 'Boek der tranen' [Book of tears]