Library of Congress. Classification Division.

• Classification
• Author notation in the Library of Congress
• Classification
• Classification. Class A: General works, polygraphy
• Classification. Class C: Auxiliary sciences of history. Printed as manuscript
• Classification. Class H: Social sciences
• Classification. Class R: Medicine
• Classification: Class B, part II, BL-BX: Religion
• Classification GR: Folk-lore
• Classification. Class N: Fine arts
• Classification. Class P, PB-PH: Philology, modern European languages. Printed as manuscript
• Classification. Class Q: Science