Prisoners seized control of the maximum-security Attica
Correctional Facility near Buffalo, New York beginning
on September 9, 1971. Later that day, state police retook
most of the prison, but 1,281 convicts occupied an exercise
field called D Yard, where they held 39 prison guards and
employees hostage for four days. After negotiations stalled,
state police and prison officers launched a disastrous raid
on September 13, in which 10 hostages and 29 inmates were
killed in an indiscriminate hail of gunfire. Eighty-nine others
were seriously injured.

On September 9, 1776, the Continental Congress formally
declares the name of the new nation to be the “United
States” of America.

Ed Sullivan talks with Elvis Presley before the show.

(History Channel) – Elvis Presley, at age 21, broke television
records with his first appearance on "The Ed Sullivan Show"
on this day in history, Sept. 9, 1956.

Elvis — along with his famous "gyrations" — had been
banned previously by Ed Sullivan from appearing on his
show.

However, after several of his competitors saw massive ratings
when Presley appeared on their shows, Sullivan reconsidered
his ban.