Ouvrage bilingue (français et anglais). This volume contains nine original articles by artists and researchers who offer a variety of perspectives on illustration from the nineteenth to the twenty-first century. This selection is the result of the research work carried out by Illustr4tio, a French interdisciplinary network devoted to expanding the field of Illustration Studies worldwide and to bringing together illustrators, printmakers, publishers, curators, collectors and academics who have a common interest in illustration. It offers a wide spectrum of stances and practices which highlight the intermedial dimension of the illustrative image. The topics under consideration range from the illustrator's and reader's investigation of and bodily involvement with a literary text to the aesthetic, commercial and technical constraints that shape the illustrator's work – as well as its reception – and define his or her object and status. The collection offers insight into a specific case of intermedial transaction and throws light on the dialogic relationship between text and image, writer or patron and artist, and more broadly between readers, texts and books.