Historical clue formulations

• *Home to Gonzaga University — 2024-07-04
• City that hosted the 1974 World's Fair — 2019-07-07
• Expo '74 locale — 2012-09-19
• Expo '74 city — 2010-03-28
• Northwest tribe — 2007-12-28
• Expo '74 site — 2006-08-12
• Gonzaga University site — 2005-05-21
• Whitworth College locale — 2000-11-17
• 1974 World's Fair site — 2000-11-02
• Washington address — 2000-01-07
• Inland Empire capital — 1996-02-24