Textual critics such as the Cambridge scholars Alan Brooke, Norman McLean and Henry S. J. Thackeray (1906–1935, 8 volumes) have used the blackletter (𝕷) as a sign (known as a siglum) for categorising Vetus Latina manuscripts.
[4] In 1949, the Vetus-Latina-Institut of Beuron Archabbey introduced a new numerical system for Vetus Latina manuscripts, of which there are several hundreds altogether.
These Beuron numbers are designed to provide unambiguous identification of witnesses in academic usage, yet they are not used very widely in general literature, as they may cause confusion with the Greek minuscule manuscripts.
[5] The Vetus-Latina-Institut allocated numbers up to 99 to all existing Vetus Latina manuscripts of the New Testament, depending on what parts of NT they include, and how old their text is.
[citation needed] When a single editor is responsible for more than one edition, these are listed in alphabetical order of the sigla of the relevant manuscripts.