Sientje Brandon joined the Hollandia-Kattenburg textile factory in Amsterdam on 28 January 1924. 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]
In addition, a Jokos file (number 20422) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.