Related Clues:

• Soviet ___
• Nostalgia elicitor
• Pitcher's preoccupation
• It goes on and on and on
• Immeasurably long period of time
• Sports meas. of effectiveness
• NOW project
• Particular period
• The dead-ball ___
• Billion years
• Geologic time period
• Stat for a reliever
• Victorian --
• Prime period
• Geological spell