Copenhagen, Kongelige Bibliotek MS. 1779. M. Joh. Walchii Schorndorffensis [teacher of Isaac Habrecht in the alchemical art] Epistola rem chymicam et praecipue opus lapidis Philosophorum concernentes, ad Dullossium Metensem Med. Doctor 1619-20. Testament Chymic. Joh. Walchi descript. 1617. Epistola [Walchi] ad Jac. Azamum eleemosynarium levis armaturae Regis Galliae.