Historical clue formulations

• Sound of the West Coast — 2022-04-16
• Sound name — 2020-05-23
• Washington's ___ Sound — 2017-11-06
• ___ Sound — 2017-08-10
• Sound in Washington — 2017-07-27
• Sound of the Northwest — 2017-01-27
• Sound name — 2013-08-16
• Washington's Sound ___ — 2010-04-01
• Sound of the Northwest — 2001-11-04
• Washington's ___ Sound — 2000-09-04
• Sound of Washington — 1996-01-28
• Washington waterway — 1994-08-04