Historical clue formulations

• "The Complete Works of …" books, say — 2026-06-17
• Heavy books — 2026-06-15
• Great volumes — 2025-09-13
• Encyclopedia volumes, e.g. — 2022-09-07
• Heavy hardcovers — 2022-04-26
• Big books — 2021-10-05
• Shakespeare's First and Second Folios, e.g. — 2017-08-19
• Weighty books — 2015-06-30
• Weighty books — 2014-12-22
• Heavy reading — 2012-02-22
• Hefty volumes — 2009-11-10
• Fillers of library shelves — 2009-10-14
• Heavy reading — 2004-09-12
• Antiquarian's stock — 2003-11-29
• Volumes — 2002-04-10
• Weighty books — 2001-11-13
• Volumes — 2000-02-05
• Parts of "complete works" — 1998-06-24
• Librarians' loads — 1998-05-02
• References, often — 1997-12-26
• Heavy volumes — 1997-11-10
• Weighty books — 1996-12-30
• Weighty reading? — 1996-11-03
• Volumes — 1996-02-21
• Big leaf containers — 1996-02-11
• Heavy reading — 1994-08-29
• Big books — 1994-08-22
• Unabridged editions — 1994-04-23