This collection of official letter books of Captain Sir Andrew Snape Hamond, Bart. (1738-1828), and his son Admiral Sir Graham Eden Hamond, Bart. (1779-1862), documents the Royal Navy during two of its most active periods. In the American Revolution, with which this collection is mainly concerned, Andrew commanded HMS Roebuck and was named commander in chief of His Majesty’s ships at Halifax. In the Napoleonic Wars, Graham took part in the abortive British invasion of the Kingdom of Naples.