Picasso’s daring depiction of his lover Dora Maar dates to 1938, just one year after he painting Guernica. Enthroned in a chair and bejewelled in emerald green dress, the portrait, like many of Picasso’s favourites, remained with the artist until his death. Femme Assise Sur Une Chaise highlights The Collection of A. Alfred Taubman: Masterworks on 4 November in New York.