To answer Stephen Esrati's question about the abbreviations LAB and OFP

LAB is the Landesarchiv Berlin. The Landesarchiv has deportation
records of Jews deported >from Berlin. These records come >from the files
(akten) of the OberFinanzPraisident agency, which looted the estates of
Jews deported to the death camps.

You might want to send an e-mail to the Berlin Landesarchiv inquiring
about the meaning of the other abbreviations you inquired about. Their
e-mail address is: info@landesarchiv-berlin.de

Hope this helps.

Steven Fischbach
Providence, Rhode Island USA
fischri@gis.net