When thinking of a symbolic foe to battle in a medieval book, many creatures come to mind: dragons, wolves, or perhaps rabbits, but the poor defenseless snail? It hardly makes for a powerful image. But it turns out, as with most artwork, the answer is more symbolic than literal. In the 1960s a book historian named Lilian Randall thought the illustrations found in the margins of illuminated books required more attention, leading to the publication of her own book, Images in the Margins of Gothic Manuscripts. In this episode of Vox Almanac, Phil Edwards shares what Randall learned as she investigated the curious snail fights.