By 1939 all Jewish commercial enterprises in Nentershausen had been closed.  The Craftsmen Trade Association from Kassel had sent a communication to the master shoemaker, Willy Katz, “with effective date of December 31, 1938, we have removed your name from our list of craftsmen”.  Reason: “The order of the decree of December 11, 1938, which eliminates Jews from the German economy.” (Record in the municipal archives of Nentershausen).  The male Jews had to take on, starting from the beginning of 1939, the additional name “Israel” and the females the additional name “Sara”.
  
Identification card of the then 41 years old Master Shoemaker, Willy Katz with the “J” for Jew and the discriminating additive name “Israel”.
Click: Additional identification cards of members of the Willy Katz family with the discriminating “J” for Jew.