Historical clue formulations

• What a slow person may need — 2010-09-14
• Dessert for Edith? — 2006-01-03
• What each word in 18-, 20-, 34- and 51-Across could be considered — 2003-05-30
• Racer's edge — 2003-03-28
• Advantage, of a sort — 1997-08-23