This book traces the evolution of Bulgarian literature from its earliest written records to the mid-20th century. It examines the key periods, authors, and works that shaped the literary landscape of Bulgaria, covering the Old Church Slavonic period, the National Revival, and the modern era up to the establishment of the People's Republic. The work is based on extensive scholarly research into primary sources and secondary literature.

Charles A. Moser's "History of Bulgarian Literature 865-1944" is recognized as a significant scholarly contribution to the study of Eastern European literature. The book provides a comprehensive overview, detailing the development of Bulgarian literary traditions across distinct historical epochs. Its thorough research and detailed analysis make it an authoritative resource for academics and students interested in the field. The work is noted for its systematic approach to tracing literary evolution within its socio-historical context.