The Mad Hatter has a basis in real history. In the 18th and 19th centuries, mercury was used to treat felt used in the produc… | Interesting history, History, Weird
Where did the phrase “mad as a hatter” come from? - HISTORY
Mad about Mad Hatter Disease - The Lazy Historian | Fascinating stories with sass from the past
Mad As a Hatter" | Origin and Meaning
Feel Like The Mad Hatter? Mercury Toxicity is More Common Than You Think
Erethism - Wikipedia
Mercury Toxicity | Biological Dentists of New Jersey
Mad Hatters | From Mercury Poisoning to Johnny Depp (TSB029) - YouTube
Object of the week- Poisonous top hat
Did the Mad Hatter have mercury poisoning?
Guest Post: The Real Dangers of Mercury - Big Think
The science behind the mercury poisoning in S-town | Daily Mail Online