The (possibly apocryphal) story goes that on this day in 1797, haberdasher John Hetherington walked onto the streets of London wearing the first top hat, which caused so much hubbub that he was arrested and fined for disturbing the peace! Plus: in January 1974, MIT professor James Henry Williams, Jr. built a 35 pound yo-yo made of two bicycle wheels, and dropped it off the side of a 21-story campus building.
History of the Top Hat (International Formalwear Association via Archive.org)
James H. Williams, Jr. and the world's largest yo-yo, 1974 (MIT Black History)
