Since Konrad Haebler produced his Bibliografía Ibérica del Siglo XV (1903-1917), numerous sources have been used to update information on Spanish incunabula. This situation will change with the research project ‘Repertorio bibliográfico de incunables españoles’ that a team of experts has been developing during the last few years and which will conclude with the publication of an updated catalogue of all works printed in the fifteenth-century Spain. In this article, I present this project, I make a brief historical introduction and analyse the fifteenth-century Spanish printing and its production. 

KEYWORDS: Spanish incunabula; Repertorio bibliográfico de incunables españoles.