Four Letters concerning an unordained rabbinic authority in Trier

The letters are addressed to Rabbis Mayer Charleville and Joseph Guggenheim of the Metz Beth-Din; they hail from Trier, Nijmegen (Holland), and Mayence (Mainz, Germany). Two of the letters are from R. Hirz Scheyer of Mainz (d. 1822), author of Torei Zahav, a kabblistic commentary to Song of Songs. According to Scholem, Torei Zahav, published in Mainz in 1875, was the last book by a German kabbalist to be printed. G. Scholem, Kabbalah (1974), p. 85