Historical Dictionary of Switzerland
The encyclopedia is being edited at the same time in the three national languages of Switzerland: German (Historisches Lexikon der Schweiz, HLS), French (Dictionnaire Historique de la Suisse, DHS) and Italian (Dizionario Storico della Svizzera, DSS). There are 13 volumes. The first was published in 2002. The last volume was published in 2014.