Scott standard postage stamp catalogue.

Canadian Internet directory and research guide / Jim Carroll and Rick Broadhead.

Dictionary of American Naval fighting ships / James L. Mooney, editor ; foreword by Arleigh Burke.

Naval documents of the American Revolution / editor, William Bell Clark ; with a foreword by President John F. Kennedy and an introd. by Ernest McNeill Eller.

Oxford Dictionary of English / edited by Catherine Soanes, Angus Stevenson.

The World Book encyclopedia.