Great Society era, with "the"

• The time of life between 60 and 70
• Era of liberalization
• "Flower power" period
• "The Help" era, with "The"
• "Flower Power" era
• Late decade
• Decade with tie-dyed shirts and miniskirts
• Number of fashion items in Mary Quant's era

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sixty \Six"ty\, n.; pl. Sixties . The sum of six times ten; sixty units or objects. A symbol representing sixty units, as 60, lx., or LX.