NFHD1

September 15 Today is National Felt Hat Day.Hat Trivia: The phrase “a mad as a hatter” comes from the use of mercury nitrate in haberdasheries in the late 18th and early 19th centuries. Over time, daily exposure to this metal caused these tradesmen to develop dementia, tics and other symptoms. These unusual side effects caused people to believe their hatters had gone mad.Also:National Cheese Toast DayNational Linguine DayNational Double Cheeseburger DayNational Creme de Menthe DayNational Tackle Kids Cancer DayNational Neonatal Nurses DayNational Online Learning DayGreenpeace Day