Written by an unknown author known as Anonymous, 'The King's Mirror' (Speculum regale-Konungs skuggsjá) is a medieval Norwegian text that serves as a didactic guide for young princes on how to rule justly and wisely. The book is structured as a dialogue between a father and his son, with the father imparting wisdom on various topics such as the importance of education, warfare, morality, and governance. The literary style of the book is didactic and instructional, typical of medieval literature, and the content is heavily influenced by Christian moral teachings and classical literature. The King's Mirror provides a valuable insight into medieval political thought and serves as a guide for rulers on how to govern their kingdoms effectively. The book is a significant piece of medieval literature that offers a glimpse into the intellectual and cultural landscape of medieval Scandinavia, making it a valuable resource for historians and literary scholars alike.

Vols. for 1921-1969 include annual bibliography, called 1921-1955, American bibliography; 1956-1963, Annual bibliography; 1964-1968, MLA international bibliography.