I just spotted a new collection on Ancestry.com:

Index of Jews Whose German Nationality was Annulled by Nazi Regime, 1935-1944

This database was created >from microfilmed German records held by the
U.S. National Archives. For more information about the records and to
search them, go to

http://search.ancestry.com/search/db.aspx?dbid=2027

Non-subscribers can search the index and view digital results (name,
date and place of birth, last residence) but they cannot view the
original cards, which include exact addresses, dates naturalization
was annulled, and maiden names.

Renee Stern Steinig, Dix Hills, New York, USA genmaven@...