Letter, from Lutzardt de Wabern to [Gilbert Elliot, 2nd Earl of Minto], dated at Bern Autographed letter. Letter of recommendation for [J. C.?] Schenck. Has employed Schenck to build mathematical instruments for his now deceased son, who was interested in mathematics. After his son's death, Wabern continue to employ Schenck to support his talents. Describes Schenck as a self-taught instrument-maker from a farming family. Praises his ability to run the workshop. Only speaks German but understands some French. 14 March 1822