Alfred Kohn was divorced in Berlin on 6 March 1933. He settled in Amsterdam on 18 November 1933.
Stadsarchief Amsterdam, archiefkaart Alfred Kohn
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, Alfred Kohn had an ice cream parlour, address: Van Woustraat 149 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives
Alfred Kohn and his partner Ernst Cahn owned the Koco ice cream parlour on the Van Woustraat in Amsterdam. On Wednesday evening, 19 February 1941, a patrol of the Nazi Ordnungspolizei raided the ice cream parlour. A squad of thugs was waiting in the ice cream parlour, poised for an attack by Dutch Nazi sympathizers. Ammonia gas was sprayed from the ice cream parlour. Ernst Cahn and Alfred Kohn were arrested and sentenced by a Nazi court in the cell barracks at the Scheveningen convict prison. Alfred Kohn was sentenced to ten years imprisonment. He did not survive the war.
B. Braber, Zelfs als wij zullen verliezen. Joden in verzet en illegaliteit in Nederland 1940-1945 (Amsterdam, 1990) p, 67;
L. de Jong, Het Koninkrijk der Nederlanden in de Tweede Wereldoorlog IV, Mei ’40 - Maart ’41 (Den Haag 1972) 889 en 912;
J. Presser, Ondergang. De vervolging en verdelging van het Nederlandse jodendom 1940-1945 II (Den Haag 1965) 84-85