Related Clues:

• Sizable duration
• Depression, e.g.
• Stat that's good when low
• The Clinton years, e.g.
• Bullpen stat
• Time piece
• Proposed change to the Const.
• Unforgettable time
• Bit of history
• Distinctive period of history
• Doo-wop favorite, e.g.
• Hurler’s stat.
• Tune for the unhip
• Doo-wop song, today
• It's a stretch