Related Clues:

• "--- That Jazz"
• Historical stage
• Ruth's was 2.28
• Unique stretch in time
• Paleozoic, for example
• --- of Good Feelings
• Several periods
• Period piece?
• One hundred percent
• Important historic period
• Geological time period
• Important time span
• See 90-Across
• Archeozoic, e.g.
• Tie indicator