Portrait of a young man, small bust-length, in classical costume and a wig, in a landscape - Nicolaes Maes
Portrait of Mr. Elisdan, bust-length, in a black coat and white cravat - (after) Romney, George
Self portrait - Jan Toorop
Portrait of an Ecclesiastic 2 - Ottavio Leoni
Portrait of John Armytage Esq. - Thomas Hudson
Portrait Of A Gentleman, Head And Shoulders, Wearing A Red Embroidered Cap, A Brown Doublet And A Red Cloak - Ferdinand Bol
Gold and Brown - James Abbott McNeill Whistler
Portrait of a gentleman, half-length, in a blue velvet jacket, a gold-embroidered waistcoat and a red cape, in a feigned oval - Giacomo Ceruti (Il Pitocchetto)
Portrait Of Sir Richard Pyne, Lord Chief Justice Of The Common Pleas In Ireland (1644-1709) - William Gandy
Portrait of Sawa Mamontov, the Founder of the First Private Opera, 1897 - Mikhail Aleksandrovich Vrubel
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 
