"Codex Junius 11" is an ancient manuscript that is considered one of the most valuable examples of English literature. The author of this book is unknown, but it is believed that the text was written in the 9th century. The book consists of poetic works of the Anglo-Saxon period, among which the poem "Beowulf" stands out. "Codex Junius 11" is not only evidence of the development of the English language, but also an important source for studying and understanding the life and culture of the ancient Anglo-Saxons. This book is a treasure trove for philologists, historians, and anyone interested in the early literature of English history.