In 1911 The National Library was given the right to recieve one copy of everything published in Britain and Ireland. Although the majority of books at The National Library of Wales are regular publications, there's also a large collection of rare and special books to be found here.
The earliest book printed in Welsh, 1546.
The first book printed on Welsh soil, 1585 [1586-87].
The first Welsh translation of the complete Bible.
An inquiry into the state of education in Wales.