Frank McClean (1837 1904) was not only an astronomer and pioneer of objective prism spectrography, but also an accomplished and systematic collector of art, books and manuscripts. McClean's collections, which were left to the Fitzwilliam Museum, Cambridge, on his death, were at that time the most notable bequest since the Museum's foundation. The fifteenth- and sixteenth-century printed books in his bequest, most of them produced in continental Europe, are described here in detail, with bibliographical descriptions and information on their provenance. Illustrated books are listed separately....