Was the Escape from Alcatraz Successful?

A 2013 letter to the FBI, if real, suggests the Anglin brothers and Frank Morris survived one of the most daring—and dangerous—prison breaks of all time.

Anniversary of a Mystery at Alcatraz - The New York Times

Escape from Alcatraz by J. Campbell Bruce

Alcatraz Escape — FBI

Alcatraz Prison Escape Conspiracy Theory – Sequoit Media

1939 newspaper 1st successful ESCAPE frm ALCATRAZ PRISON by Cole & Roe CONFIRMED

Escape from Alcatraz: Letter claiming inmates survived 'inconclusive

Riddle of the Rock: The Only Successful Escape from Alcatraz, Don Denevi

Man claims he is one of three 1962 Alcatraz escapees

Is this the picture that 'proves' John and Clarence Anglin DID escape Alcatraz?

Alcatraz Island – San Francisco, California - Atlas Obscura

These are the dummy heads used by inmates Frank Morris, Clarence Anglin, and John Anglin from when they made their escape from the notorious Alcatraz Island penitentiary on the night of June

Escape From Alcatraz - Movies on Google Play

The Evolution of Eastwood: ESCAPE FROM ALCATRAZ - Feelin' Film

Alcatraz escape: Their families insist they survived. Investigators doubt it. The enduring mystery of the three missing men

Alcatraz inmates survived infamous 1962 escape, letter suggests - CBS News