Portrait of James, Duke of York, later King James II (1633-1701) - (after) Sir Peter Lely
Self Portrait 5 - Maurice Quentin de La Tour
Portrait of Lupe Marin (Retrato de Lupe Marin) 1938 - Diego Rivera
Portrait of lady, half-length, in a red and white dress, a dark red wrap and pearl earrings, a letter in her left hand, leaning on a stone ledge - Samuel Van Hoogstraten
Portrait of John Crewe, later 1st Baron Crewe (1742-1829), three-quarter-length, in a gold-embroidered blue coat and waistcoat - Pompeo Gerolamo Batoni
Head of a Man (Self-Portrait) - Eugene Zak
Portrait Of N P Chernyshova 1846-47 - Pavel Andreevich Fedotov
Portrait of a gentleman, half-length, as a Roman Senator - (after) Ingres, Jean Auguste Dominique
Portrait of the Composer Alexei N Verstovsky 1799-1862 - Charles de Hampeln
Self Portrait - Nicolas Poussin
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 
