Related Clues:

• Castor and snake
• Some Da Vinci pieces
• Portrait paints
• Works at the Louvre?
• Many old masters
• Quiets, as a squeak
• Van Gogh works
• Cottonseed et al.
• Mondrian medium
• Makes less squeaky, perhaps
• Many works at the Met
• Works on canvas
• Olive and others
• Some hair products
• Lubes