Related Clues:

• Spoken-word #1 hit of 1964
• See 55-Across
• Catherine the Great's successor
• 1964 #1 hit
• With 49-Down, 'The Firm' actor
• One-spot
• Fab Four name
• One of the Apostles
• Head
• Dear guy?
• A Beatle
• New Testament book
• See 53-Down
• Facilities
• Beatle with a beat