Mitchell Jay Feigenbaum, US mathematician and physicist, is born His pioneering theoretical studies demonstrating the universal character of non-linear systems made possible the systematic study of chaos 

First city ordinace requiring white and black residential areas (Balt) 

Rayon 1st commercially produced, Marcus Hook, Penn 

Gas explosion at Jacobs Creek Pennsylvania, coal mine kills 239  Read more...

Williamsburg suspension bridge opens between Brooklyn and Manhattan