Since the publication of the still very valuable Biblioteca historica de la filologia by Cipriano Munoz y Manzano, conde de la Vinaza (Madrid, 1893), our knowledge of the history of the study of the Spanish language has grown considerably. It has been the purpose of BICRES I (from the early beginnings to 1600), published in 1994, to bring together already available bibliographical information with the more recent research findings, scattered in many places, books and articles. BICRES II (covering the 1601-1700 period) followed in 1999 and BICRES III (including period 1701-1800) was published in 2005.
Now, the fourth volume, arranged according to the same principles as those guiding the preceding volumes and covering the years from 1801 to 1860, has become available.
Years of research in the major libraries of Spain and other European countries have gone into this new bibliography and relative sources of the Americas have also been covered, in order to offer - in an as exhaustive as possible fashion - a description of all Spanish grammars and dictionaries, histories of the Spanish language as well as studies devoted to particular facets of its evolution during the years 1801-1860.
BICRES IV brings together in chronological order more than 3,279 titles. Access to the bibliographical information is facilitated by several detailed indexes, such as a short title index, a listing of printers, publishers and places of production, and an author index.

Assisted by: Adrian Alvarez Fernandez, Elena Battaner Moro, Vicente Calvo Fernandez, Lamia Haouet, Susana Rodriguez Barcia