Historical clue formulations

• Social studies subj. — 2025-08-28
• Park ranger's subj. — 2023-03-14
• Mapmaker's subj. — 2021-10-03
• Sci. with maps — 2016-07-27
• Trivial Pursuit category: Abbr. — 2013-03-03
• Popular Sporcle subj. — 2011-05-13
• Elem. sch. class — 2007-07-05
• Atlas maker's subj. — 2005-12-13
• An earth sci. — 2005-03-01
• Trivial Pursuit category: Abbr. — 2002-07-25
• H.S. subject — 1999-07-29
• Mercator's field: Abbr. — 1995-06-04
• Rand McNally subj. — 1994-12-02