https://www.joodsmonument.nl/nl/page/130916/gerard-lodewijk-robertus-soesman
https://collecties.kampwesterbork.nl/persoon/https%3A%2F%2Fkampwesterbork.nl%2Fdata%2Fperson%2F14035684
His story:
https://map.stolpersteine.app/nl/maastricht/locaties/koestraat-12