This long-awaited study of the marginalia in European manuscripts of the thirteenth and fourteenth centuries, directed by Jean Wirth, follows on half a century of intense research on images in the margins by many prominent scholars of medieval material culture, much of it inspired by Lilian Randall’s publications in the 1950s and 1960s. In dealing with this perplexing material since the 1980s, interpretive strategies and theoretical frameworks have become as significant as source hunting and...