Michael Johnston is an Assistant Professor of English at Purdue University (West Lafayette, Ind., USA). He specializes in the history of the book, particularly the manuscript culture of fifteenth-century England. His work on this topic has recently appeared in the Journal of English and Germanic Philology, Journal of the Early Book Society, Viator, and Yearbook of Langland Studies. He regularly offers courses on British literature and culture, primarily of the Middle Ages, as well as courses on the history of books.