'Portrait of Pablo Picasso' ('The Athenaeum', 1915, oil on cardboard, private collection), a Spanish painter and sculptor (1881-1973), one of the most recognized figures in 20th-century art and one of founders of the Cubist movement, and the 'Portrait of Diego Rivera' (1914, oil on cardboard, Museum of Art, Sao Paolo, Brazil), a world-famous Mexican painter, an active communist, and a husband of the painter Frida Kahlo, are among the best portraits made by Amedeo Modigliani for his friends from the artistic circle in Paris.