Founded in 1968, we deal in rare books, documents and manuscripts from the Middle Ages until around the end of the 19th. century.

We specialize in Spanish Literature and History, Incunabula, Early printing, Travel (particularly travels in Spain), América, Art and Architecture, Illustrated books, Bibliography and Fine bindings. We publish one annual catalogue and several tematic catalogues.

Guillermo Blázquez Libros Antiguos is member of the International League of Antiquarian Booksellers (I.L.A.B.-L.I.L.A.), of the Asociación Ibérica de Librerías Anticuarias (A.I.L.A.) and also of the Gremio Madrileño de Libreros.