Ordinance work for those names was completed some years before 1910 – i.e., not since 1910 – in Logan ("Switzerland_Bern_Genealogy". familysearch.org.).
Billeter, "Pioneer Swiss Genealogist", 30. The newspaper report – "Gold Wedding To Be Noted – Julius Billeter Couple Will BeFelicitated", The Deseret News, Salt Lake City, June 23, 1941 – erroneously stated the year to be 1922. "memories". familysearch.org.
hls-dhs-dss.ch
Dubler, Anne-Marie. "Genealogie". Historisches Lexikon der Schweiz.