Possible Clues:

• Eastman or Westinghouse
• Nova Scotia bay or boxer Chuvalo
• 25 stuff about English
• King with cross?
• He dropped a key into the canyon
• Is 'e in the depths there?
• He puts back the eggs in the egg container
• Man rowing on holiday throws wife finally into ravine
• Fighter Foreman
• With 37-Across, speaker of the query