In 1917, Vladimir Lenin returned to Russia in a sealed train after years in exile.
In 1943, Swiss chemist Albert Hofmann discovered the hallucinogenic effects of LSD.
In 1947, a fertilizer explosion during the loading of the freighter Grandcamp at a pier in Texas City, Texas, left more than 500 dead.
In 1963, civil rights leader Martin Luther King Jr. penned his famous “Letter From Birmingham City Ja…