Mashable6y
Ever wonder how the Mad Hatter got his name? Here's a brief history of making the dangerous top hats
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Business Insider7y
The incredible story of how hatmakers really did 'go mad'
The expression "mad as a hatter" is based on the real-life practices of hatters beginning in the 17th century. It turns out that the process they used to make their hats was poisoning them and ...