Historical clue formulations

• Subject of an annual festival in Holland, Mich. — 2019-07-14
• Monet's Dutch subjects — 2013-01-13
• Dutch exports — 2012-06-24
• Certain 1-Across, in time — 2005-06-01
• Pennsylvania Dutch pottery design — 2002-05-18
• Dutch export — 1997-12-03