Historical clue formulations

• ___-de-sac — 2026-02-27
• With 8-Down, street with no outlet — 2021-10-13
• ___-de-sac — 2021-04-11
• ___-de-sac — 2019-11-20
• ___-de-sac — 2018-11-03
• ___-de-sac — 2018-04-09
• ___-de-sac — 2017-11-30
• ___-de-sac — 2017-06-02
• ___-de-sac — 2016-08-01
• ___-de-sac — 2016-03-30
• French bottom — 2014-08-01
• ___-de-sac (dead-end street) — 2011-07-25
• ___-de-sac — 2010-05-18
• ___-de-sac — 2008-08-24
• ___-de-four (hemisphere-shaped vault) — 2008-01-05
• ___-de-sac — 2007-10-15
• With 10-Across, stalemate — 2007-05-12
• ___-de-sac — 2000-08-08
• ___-de-sac — 1998-03-13
• ___-de-sac — 1997-03-30
• ___-de-sac — 1996-01-19
• _____-de-sac — 1995-07-09