Historical clue formulations

• Surrey's Derby town — 2026-09-20
• English town famous for its salts — 2026-05-18
• ___ salts — 2026-03-16
• English town known for its salt — 2025-12-11
• ___ salt — 2025-09-23
• English town known for its mineral water — 2025-08-09
• Surrey town known for its salt — 2025-06-11
• ___ salt (form of magnesium sulfate) — 2025-05-01
• Surrey town known for its salt — 2025-03-12
• ___ salts — 2024-08-27
• English town known for its mineral springs — 2024-07-25
• English derby site — 2022-10-07
• Where The Oaks is run — 2022-06-11
• English town known for its salt — 2022-03-15
• ___ salts — 2021-09-30
• ___ salt (magnesium sulfate) — 2021-03-21
• English town known for its salt — 2020-10-15
• British racing town that lent its name to a kind of salt — 2019-02-18
• With 59-Down, spa supply — 2018-03-03
• ___ salts (bath supply) — 2017-11-27
• Market town in Surrey — 2016-12-30
• English racing venue — 2016-12-12
• ___ salts — 2015-08-09
• British college — 2015-07-11
• British racetrack site — 2015-03-29
• English racetrack site — 2014-06-23
• Town with an eponymous derby — 2014-03-05
• British racetrack site — 2012-10-23
• Old English spa town — 2012-10-19
• U.K. Triple Crown racecourse site — 2012-01-20
• Oaks Stakes setting — 2011-12-24
• ___ Downs — 2011-09-13
• With 4-Down, MgSO4.7H2O — 2011-09-11
• English derby site — 2011-08-10
• English racing town — 2011-07-13
• ___ salts — 2011-07-11
• ___ salts — 2010-12-20
• English race site — 2010-10-20
• ___ salts — 2010-09-13
• English racing town — 2010-06-27
• English Derby site — 2009-12-27
• ___ salts — 2009-08-04
• ___ salts — 2008-07-17
• ___ salts — 2007-12-23
• With 55-Across, MgSO4.7H2O — 2007-08-04
• ___ salts — 2006-10-04
• ___ salt — 2006-01-19
• ___ Downs — 2005-12-29
• ___ salts — 2005-10-31
• Derby locale — 2005-08-21