Beginning in 1810, the main archive in Potsdam (Brandenburgisches Landeshauptarchiv Postdam) kept records of people who requested permission to leave the county. Most emigrants went to North America (Nord-Amerika), but a few also went to Australia, the Netherlands, Austria, and Russia. Only those who received permission to leave were listed.
The province of Brandenburg included 44 Kreise (counties). The first part of this database project will include emigrants from the following Kreise: Arnswalde, Calau, Franfurt a./O, Friedeberg i./Neum., Stadtkreis Guben, Landkreis Guben, Koenigsberg, Landkreis Landsberg, Lebus, Lichtenberg, Luckau Sorau, Spremberg, Sternberg, and Zuillichau or Schwiebus.