Law on Alteration of Family and Personal Names
Passed on August 17, 1938, this law required all Jewish men and women whose first names were of "non-Jewish" origin to add the names "Israel" for men and "Sara" for women to their names effective January 1, 1939.

Identification card issued to Heinrich “Israel” Loewenstein in Berlin, March 31, 1939.
Courtesy of Beck Archives, University Libraries, University of Denver