Meyers Orts- und Verkehrs-Lexikon des Deutschen Reichs (Meyers Gazetteer), online edition, with GOV (genealogy.net) for post-1945 Polish equivalents · meyersgaz.org / gov.genealogy.net
Blankenburg 3), Angermünde, Potsdam, Brandenburg, Preussen
Checked all 11 other Blankenburg entries in Meyers: this is the unique Angermünde-Kreis match, distinct from Angermünde's own point.
Meyers Orts- und Verkehrs-Lexikon des Deutschen Reichs (Meyers Gazetteer), online edition, with GOV (genealogy.net) for post-1945 Polish equivalents · meyersgaz.org / gov.genealogy.net
Blankenburg 3), Angermünde, Potsdam, Brandenburg, Preussen