Felix de Latassa y Ortin (November 21, 1733 – April 2, 1805) was Aragonese bibliographer responsible for compiling (in several works) a chronological index of Aragonese writers from the time of the birth of Christ up to his own time.
The bibliographies are often treated in two parts:
The first, in two large volumes, catalogues Aragonese literature and letters ranging from the years 1 to 1500.
The second part, separate volumes that cover from 1500 to his own contemporary age (1802).Latassa's bibliographies also contain many biographical notes which are a valuable (and sometimes sole) source for many Aragonese historical figures.