Portrait of John Kenwich, Jr., bust-length, in a red coat with fur trim - George Romney
Portrait of a Gentleman - John Hoskins
Portrait of Mother Jacoune Dealer of Fruits and Vegetables - Marcellin Desboutin
Portrait of Charles VII 1403-61 - Jean Fouquet
Portrait of Marie de Bonneval Duchess of Cadore - Edouard Louis Dubufe
Portrait of a Mathematician, seated three-quarter-length, in a black cloak, holding a stick and a piece of paper, a book of geometry beside him - Paulus Lesire
Portrait of the Blessed Margaret of Lorraine 1463-1521 - Katharina van Hemessen
Portrait Of A Lady - Tilly Kettle
Self Portrait On The Borderline Between Mexico And The United States 1932 - Frida Kahlo
Two Faces At A Window - Boris Dmitrievich Grigoriev
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 
