Historical clue formulations

• Capital of Delaware — 2025-12-15
• Mid-Atlantic state capital — 2025-08-31
• Strait of ___, narrowest part of the English Channel — 2024-07-19
• Second chance — 2015-10-29
• One of England's Cinque Ports — 2012-08-12
• Capital suggested by the circled letters and by the starts of 17- and 63-Across and 11- and 29-Down — 2008-05-06
• Sole source — 2002-06-02
• Sole provider? — 2001-11-25
• White cliffs locale — 2001-08-15
• Delaware's capital — 1995-05-09