Historical clue formulations

• Model world — 2022-07-24
• It's a small world — 2022-06-26
• Part of an Atlas statue — 2021-08-10
• Wikipedia's logo — 2020-01-19
• Grade school classroom accessory — 2019-05-09
• Classroom item that spins — 2017-10-16
• Boston daily — 2016-11-23
• Small world? — 2015-06-28
• Unisphere, e.g. — 2011-07-21
• Universal picture? — 2011-07-04
• See 46-Across — 2010-05-07
• Meridian shower — 2009-11-13
• Schoolroom feature — 2007-02-24
• Shakespeare's theater — 2006-09-19
• Classroom fixture — 2005-09-22
• Boston newspaper — 2004-10-05
• Ball — 2004-08-12
• Planet — 2004-02-16
• Common classroom sight — 2004-01-18
• Sphere — 2002-06-30
• Shakespeare's theater — 2001-04-17
• Popular supermarket tabloid — 2000-09-15
• Classroom accessory — 1998-08-30
• Orb — 1996-08-11
• Boston daily — 1993-12-24