7. Aa's correspondence about e.g. his cooperation on statistical studies, some reports concerning "Technische grondslagen statistisch onderzoek de Amsterdamse Joden" ("Technical foundation statistical studies on Amsterdam Jews") and a proposal from Aa for the statistical editing of 80.000 Jewish identity cards in Amsterdam. Furthermore, a description of "Het rapport professor Cohen" ("The report professor Cohen"), 23 april 1941 - 19 februari 1942

Collectie 181g_ENG: Inventory