His work led him to take an interest in two linguistic enigmas: Rongorongo and the Voynich manuscript.
In 1951 Tiltman met William Friedman, one of the leading scholars involved in the attempt to decipher the mysterious Voynich manuscript.
Voynich manuscript, a mysterious undeciphered document from the 1400s, named after its re-discoverer, Wilfrid Voynich
manuscript | Beinecke Rare Book and Manuscript Library | Bateman Manuscript Project | Voynich manuscript | Manuscript Society | Wilfrid Michael Voynich | Bateman manuscript project | The ''Apicius'' manuscript (ca. 900 AD) of the Fulda monastery | Music manuscript | Manuscript | Judith unwisely allows a young man to have a preliminary look at her father's manuscript of ''The Tempest | Henry Atkinson manuscript | Frontispiece to a manuscript of Octavien's translation of Ovid's ''Heroides | Elbasan Gospel Manuscript | Bower Manuscript | Beinecke Rare Book and Manuscript Library | Auchinleck manuscript | A detail from a 15th-century manuscript of ''Dala’il al-Khayrat'' showing Al-Masjid an-Nabawi |
Wilfrid Michael Voynich (1865–1930), Polish revolutionary, discoverer of the Voynich manuscript, husband of Ethel