“Vincent van Gogh – Sunflowers (Metropolitan Museum of Art)” by Vincent van Gogh – Digital photo by User:Postdlf. Licensed under Public domain via Wikimedia Commons – http://commons.wikimedia.org/wiki/File:Vincent_van_Gogh_-_Sunflowers_(Metropolitan_Museum_of_Art).jpg#mediaviewer/File:Vincent_van_Gogh_-_Sunflowers_(Metropolitan_Museum_of_Art).jpg