When did Mormon missionaries first go to Switzerland?
From the LDS.org newsroom statistics and history:
"Missionary work for The Church of Jesus Christ of Latter-day Saints began in Switzerland on November 24, 1850. A Church publication, the Millennial Star, reported that 20 converts were baptized in 1851, cut many Church members emigrated to America up until the 1950s.
Today members total approximately 7,000, with many coming from second, third, and fourth generations of Church members in Switzerland. Forty congregations meet in 27 meetinghouses."