sentences:  Their microscopic examination confirmed that the parchment had been treated very roughly at some time, with 95% of fibres damaged.In June 2013, it was reported in the British press that a Scottish researcher, John Paul Floyd, claimed to have discovered two pre-1957 references to the Yale "Speculum" and "Tartar Relation" manuscripts which shed significant light on the provenance of the documents.According to one of these sources (an exhibition catalogue), a 15th-century manuscript volume containing books 21-24 of the "Speculum Historiale" and C. de Bridia's "Historia Tartarorum" featured among the many items loaned by the Archdiocese of Zaragoza for display at the 1892-93 "Exposición Histórico-Europea" (an event held in Madrid, Spain to commemorate the voyages of Columbus).