Portrait of a Gentleman, traditionally identified as William Bentinck, 1st Earl of Portland (1649-1709), three-quarter-length, in Garter robes -
Michael Dahl
Portrait of a lady thought to be Elizabeth Duchess of Beaufort -
Michael Dahl
Portrait of a Young Boy of the Winnington Family -
Michael Dahl
Portrait of a young gentleman, half-length, in a green coat, with gold frogging, holding a bow in his left hand -
Michael Dahl
Portrait of Admiral Sir Thomas Hardy, three-quarter-length, with a telescope in his right hand, his left hand resting on a cannon, his ship beyond -
Michael Dahl
Portrait of an artist, identified as Joseph Goupy (c.1680-c.1770), half-length, holding a landscape painting in the style of Salvator Rosa -
Michael Dahl
Portrait of Thomas Wolsey Cardinal and Statesman from Memoirs of the Court of Queen Elizabeth - Sarah Countess of Essex
Portrait of James Hamilton 1606-49 1st Duke of Hamilton - (after) Dyck, Sir Anthony van
Portrait of an Old Man - Sir Anthony Van Dyck
Portrait of Mariana of Austria, Queen of Spain - Diego Rodriguez de Silva y Velazquez
Portrait of Henry VI of England (1421-71) - (after) Clouet, Francois
A Young Woman In Classical Dress Holding A Red Rose - Georges Bellanger
Portrait of Richard, 1st Earl Grosvenor, c.1760 - Sir Joshua Reynolds
Portrait of a boy said to be the Duke of Gloucester holding a bow - Sir Godfrey Kneller
Portrait of a Woman - Pierre Mignard
Portrait Of A Gentleman 3 - Michael Dahl
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the 
