Literature to the postal history of the SBZ, as well Richter - "pre-payment of postage in cash" and "Local emergency cancel" both books as good as new, Granica - "Spremberg" special font 13 of the study group Loknot, Barth / Montovani - "postage stamps & postcards the 4 occupied areas Germany's", a number of bound copies, as well various writings of the study group Loknot, Büchner - "Contributions to the postal history Mecklenburg Western Pomerania", list of postal institutions of the SBZ from 1947 and so on. ;