Their Noble Lordships: How to Tell a Duke From an Earl...And Other Mysteries Solved
Complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom
Debrett's New Guide to Etiquette and Modern Manners: The Indispensable Handbook
American and English genealogies in the Library of Congress
The Scots peerage: founded on Wood's ed. of Sir Robert Douglas's Peerage of Scotland; containing an historical and genealogical account of the nobility of that kingdom