Historical clue formulations

• Explorer Vespucci — 2016-04-05
• First name among Italian explorers — 2013-11-23
• Explorer Vespucci — 2005-01-05
• Explorer Vespucci — 2003-12-18
• Name after which the New World is named — 2003-10-25
• Explorer Vespucci — 2001-01-24
• First name in exploration — 1997-09-13