Historical clue formulations

• Metro regions, informally — 2026-05-03
• Metro areas, informally — 2019-11-17
• Cities, informally — 2018-08-07
• Heavily populated areas, informally — 2013-09-21
• Cities, informally — 2012-07-24
• City, to Cicero — 2012-04-17
• Cities, informally — 2011-11-13
• Downtowns, e.g. — 2011-07-09
• High-rise locales — 2001-06-20
• Cities — 1998-04-25
• City areas, informally — 1997-07-16
• City, to Cato — 1996-04-26