The collection includes a copy of a letter from Voltaire to Albrecht von Haller, baron Haller dated 13 February 1759. In the letter, Voltaire sends a certificate [wanting] to introduce Grasset who wishes for recipient’s protection. He then discusses a text printed at Lausanne which represents an abominable libel against the Moors, religion etc. He adds that he thinks recipient should refuse a protection to such a rascal, noting that the author of the libel is a man named Verlecke or Leveche, formerly teacher of M. Constant, and is minister of a village near Lausanne