Related Clues:

• Pitching stat.
• The Roaring Twenties, e.g.
• Particular time
• It may be golden
• Baseball stat.
• Period of time
• Bygone pol. cause
• Victorian, for one
• Cause that NOW championed
• Procter & Gamble detergent
• Time in history
• Mesozoic or Paleozoic
• See 36-Across
• Depression ___
• See 35-Across