The Portrait of Charles Meryon was a 19th century sketch by the French artist Félix Bracquemond.
In 2399, this sketch adorned one of the walls in Jean-Luc Picard's study at Chateau Picard. (PIC: "Maps and Legends", "The End is the Beginning", "Absolute Candor", "Stardust City Rag", "Broken Pieces")
The identification of this sketch was made by Jörg Hillebrand and Bernd Schneider for Ex Astris Scientia. [1]