Meyer Schapiro, eminent mid-twentieth-century scholar of Early Christian, medieval, nineteenth-century, and modern art, gave these six lectures on Insular manuscript illumination in 1968 as the inaugural series of the Franklin Jasper Walls Lectures at the Pierpont Morgan Library. The lectures reflect a segment of Schapiro’s two decades of study on Insular art, most of the results of which were “published” as public lectures in various fora; only three, on specific issues, were sent to press...