The study of ego-documents figures as a prominent theme in cutting-edge research in the Humanities. Focusing on private letters, diaries and autobiography, this volume covers a wide range of different languages and historical periods, from the sixteenth century to World War I. The volume stands out by its consistent application of the most recent developments in historical-sociolinguistic methodology in research on first-person writings. Some of the articles concentrate on social differences in relation to linguistic variation in the historical context. Others hone in on self-representation, writer-addressee interaction and identity work. The key issue of the relationship between speech and writing is addressed when investigating the hybridity of ego-documents, which may contain both "oral" features and elements typical of the written language. The volume is of interest to a wide readership, ranging from scholars of historical linguistics, sociolinguistics, sociology and social history to (advanced) graduate and postgraduate students in courses on language variation and change.