Portrait Of Christopher Griffith (D.1767), Of Winterborne, Gloucestershire -
Thomas Gainsborough
Portrait of Mrs. Sandys, the artists mother, later 1840s - Anthony Frederick Sandys
Portrait of Mary Dowdeswell, half-length, in a blue gown, feigned oval - Michael Dahl
Portrait of a Young Woman with a Lace Bodice 1925-6 - Jacqueline Marval
Portrait Of A Lady, Said To Be Mrs Mcfarlane, Daughter Of Lord Halbett Of Pitfirrane - (after) William Aikman
Portrait of a lady, half-length, wearing a pearl necklace, bracelets and a gossamer wrap - (attr. to) Floris, Frans
Portrait Of Dorothy Coffin (B.1650) - (after) Kneller, Sir Godfrey
Portrait of Frances Macartney - George Knapton
Portrait of Ninon Szinyei Merse 1870 - Pal Merse Szinyei
The 'Pas de Quatre': Carlotta Grisi (1819-99) Marie Taglioni (1804-84) Lucile Grahn (1819-1907) and Fanny Cerrito (1817-1909) - Alfred-Edward Chalon
Portrait of Anne Greenly - Thomas Gainsborough
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 
