The Viking Age in two volumes as a broad study of the early history, manners, and customs of the ancestors of the English-speaking nations. He labored for eight and a half years and carefully read hundreds of Sagas that describe the life of the people who inhabited the Scandinavian Peninsula from the Stone Age to the Middle Ages (including literary remains). This scholarly work demonstrates what is now generally recognized, the importance of the Norse, including Norway, Sweden, and Denmark to the cultural dimension and transformation of British Isles during the fifth to eleventh centuries