Thanks to Jan Meisels Allen, IAJGS Vice President for this citation:

In the May 20th issue of the Tablet Magazine, there is a story on the
pre-WWII Jewish businesses in Berlin.

According to the article, there were once 50,000 Jewish businesses.

Researcher and educator at the House of the Wannsee Conference,
historian Christoph Kreutzmueller, wrote a book (in German):
"Final Sale: The End of Jewish Owned Businesses in Nazi Berlin".

There is also an online database of thousands of companies that used
to exist in Berlin between 1930-1945.

The database may be accessed at:
http://www2.hu-berlin.de/djgb/www/find

It is searchable, free and written in German.

To read the Tablet Magazine article go to:

http://tinyurl.com/m58bjp6

from the article you can listen to a 13-minute discussion on this

topic including an interview with historian Kreutzmueller.

GerSIG Moderator - again, with thanks to Jan Meisels Allen