Book excerpt: Up until now, facts about theatrical rehearsal have been considered irrecoverable. But in this groundbreaking new study, Tiffany Stern gathers together two centuries' worth of historical material which shows how actors received and responded to their parts, and how rehearsal affected the creation and revision of plays. Plotting theatrical change over time, from the mid-sixteenth to the late eighteenth century, this book will revolutionize the fields of textual and theatre history alike.