Historical clue formulations

• Drag racing org. — 2018-12-20
• Dragsters' grp. — 2017-03-04
• Dragsters' org. — 2015-02-27
• Drag racers' governing grp. — 2014-05-16
• Drag racers' org. — 2014-03-26
• Drag racing org. — 2010-02-02
• Dragsters' org. — 2000-01-05