Historical clue formulations

• Engraved stone marker — 2019-05-01
• Many an ancient tombstone — 2018-07-19
• Engraved pillar — 2017-11-01
• The Rosetta Stone, for one — 2016-04-30
• Inscribed pillar — 2014-05-15
• Inscribed pillar — 2010-03-30
• Archaeological find — 2009-06-25
• Inscribed pillar — 2006-05-01
• Ancient burial stone — 2006-01-20
• Commemorative piece — 2005-11-04
• Tomb marker — 2005-07-09
• Engraved pillar — 2005-05-19
• Inscribed stone — 2004-05-21
• Stone monument — 2003-10-23
• Stone marker — 2003-06-29
• Marker — 2001-10-21
• Memorial marker — 2001-03-02
• Commemorative marker — 2000-03-26
• Commemorative marker — 2000-02-14
• Inscribed pillar — 1997-12-31
• Marker — 1997-02-02
• Carved stone slab — 1996-08-13
• Inscribed slab — 1996-08-08
• Stone slab — 1996-07-19
• Inscribed pillar — 1996-02-11
• Engraved marker — 1996-01-24
• Commemorative stone — 1996-01-20
• Archaeological find — 1995-05-26
• Grave marker — 1995-01-18
• Inscribed pillar — 1995-01-09
• Stone marker — 1994-07-22