Historical clue formulations

• Books with legends — 2025-10-26
• National geographic books? — 2022-01-08
• Self-help books for those feeling lost? — 2020-07-10
• Map books — 2019-10-01
• Volumes that almost always have indexes — 2018-08-16
• Place holders? — 2017-11-19
• They go around the world — 2014-09-14
• They have scales — 2012-04-29
• Their scales aid in location — 2012-04-21
• Their images are out of this world — 2012-03-22
• See 1-Across — 2010-02-04
• World books — 2008-02-24
• Country albums? — 2007-05-18
• World views? — 2005-04-28
• World records? — 2005-02-12
• Travelers' aids — 2004-02-22
• Library section — 2001-09-08
• They'll show you the world — 2000-08-21
• Travel guides — 1999-10-24
• They show the way — 1997-12-30
• Books stored horizontally — 1995-11-19
• Books that suffer where and tear? — 1993-12-11