Historical clue formulations

• Components of archipelagoes — 2019-01-28
• Vacation spots — 2004-09-02
• Some treasure hunters' destinations — 2002-11-07
• Major keys? — 2002-01-09
• Montreal and others — 2001-07-21
• Archipelago components — 1997-11-16
• Christmas and Easter — 1997-06-13