Maria Kraay, 9 years old, living at Rapenburg 73 ground floor in Amsterdam, (child of Marinus Kraay and Hester de Ruiter), reports having seen the fire alarm 321 (Rapenburg square), put into operation by Jacob Hilversum, aged 9 years, living at Rapenburg 100 2nd floor, presumably on instructions from Salomon Barmhartheid, age 9, residing at Rapenburg 101 2nd floor. Police report is drawn up. Children picked up by parents. (Hijman Hilversum x Elisabeth Brander and Leendert Mercy x Esther Vogel).
Source: the City Archive of Amsterdam, Police Reports 1940-1945/archive 5225/inventory 6068/Amsterdam period 1926-1956/ Salomon Barmhartigheid.