Historical clue formulations

• City whose welcome sign features Mark Twain — 2023-03-24
• New York resting place for Mark Twain — 2022-07-10
• New York city where Mark Twain is buried — 2022-03-22
• New York city where Mark Twain was married and buried — 2020-02-09
• Upstate New York city south of the Finger Lakes — 2020-01-06
• New York city west of Binghamton — 2019-01-12
• Upstate New York city where Mark Twain was buried — 2016-03-16
• Twain's New York burial place — 2014-08-13
• New York site of Mark Twain's grave — 2013-01-30
• Seat of New York's Chemung County — 2012-12-08
• City SW of Syracuse — 2009-07-01
• New York city where Mark Twain is buried — 2007-11-19
• College in south central New York — 2007-06-22
• City where Mark Twain is buried — 2004-07-02
• City SW of Ithaca — 2003-07-27
• New York city where Mark Twain lived — 2001-06-11
• Where Mark Twain is buried — 1999-12-10
• Where Mark Twain is buried — 1998-07-26
• Upstate New York city — 1996-03-04
• Upstate New York city — 1995-04-29
• Where Mark Twain is buried — 1995-04-20