Related Clues:

• Prado collection
• Museum collection
• ''Jealous mistress,'' to Emerson
• Drawings
• Prints and paintings
• Bust, maybe
• Prado hangings
• Picassos, e.g.
• Joker Johnson
• Graffiti, to some
• Mural or sculpture
• Creative output
• Paul's '60s-'70s singing partner
• Verb with thou, perhaps
• Works of da Vinci, e.g.