For information about the illuminated manuscript styles during the medieval period, see Encyclopedia of Art: Medieval Manuscript Illumination (c.1000-1500); Romanesque Illuminated Manuscripts (c.1000-1150); and Gothic Illuminated Manuscripts (c.1150-1350).
Early Illustrated Books: a history of the decoration and illustration of books in the 15th and 16th centuries, by Alfred W. Pollard. Call Number: Z1023 .P77 1926 Publication date: London, K. Paul, Trench, Trubner; New York, E.P. Dutton, 1926 (3d ed.) Also Available Online.
What is a miniature?
"A miniature is an independent illustration, as opposed to a scene incorporated into another element of the decorative scheme such as a border or an initial. It takes its name from the Latin miniare, meaning 'to colour with red' (the adornment of books originally was executed in red, or minium)." (Source: Glossary for the British Library Catalogue of Illuminated Manuscripts)