Related Clues:

• Important span
• Slice of time
• Big stretch
• Segment of history
• MLB statistic
• Time without end
• Quite a long stretch
• FDR's time in office, e.g.
• The Wild West, e.g.
• Wisk alternative
• Geologi-cal time
• Chronology component, perhaps
• Span
• It's a big stretch
• Pitching number