Possible Clues:

• Dried cocoa-nut kernels, source of oil
• What gives oil company public relations answer
• Coconut's kernel
• Business needing public relations in connection with a nutty product
• Coconut product
• Get Burlington House a good oil-supplier
• Coconut crop developed before mid-May
• Arrest man with hawk's head, a bit of a nut
• The policeman and the artist together make one nutty
• Catch artist looking for source of oil?