Historical clue formulations

• Ohio town that was the first permanent settlement in the state (1788) — 2019-06-28
• Victor Herbert's "naughty" girl — 2013-04-06
• Ohio city named for a queen — 2010-09-19
• Oldest permanent settlement in Ohio — 1999-09-26
• Seat of Cobb County, Ga. — 1999-08-27
• Oldest city in Ohio — 1994-09-17