Where can I find information on the topic of emigration?

The term ‘emigration’ is not clearly defined (see the introduction to the topic of emigration in the Swiss Historical Lexicon). The destination of an emigration can be within (domestic migration) or outside of Switzerland. Information on a migrating person can be found at his or her place of departure, at the points of temporary stop-over and at the final immigration destination.

• Sources and research aid in the State Archives
  - until the 18^th century
  - in the 19^th century
  - in the 20^th century
• Emigration always means Immigration: online sources