Alcatraz Escape — FBI

The fate of three men—Frank Morris, John Anglin, and his brother Clarence Anglin—who made a daring escape from an isolated island prison in 1962 remains a mystery to this day.

Alcatraz Escape, Part 4 of 17: The Federal Bureau of Investigation (FBI: 9781288541706: : Books

Alcatraz escape: Fugitive John Anglin's name on letter to police

Alcatraz letter: Nephew of inmate weighs in on mystery - CBS News

Alcatraz Escape — FBI

50 Years Later, Mystery Of Alcatraz Escape Endures : NPR

Alcatraz mystery deepens after discovery of letter signed by fugitive claiming prisoners survived escape, The Independent

Alcatraz Escape — FBI

Letter claims inmates survived infamous Alcatraz escape

Alcatraz Escape — FBI

New evidence in 60-year-old Alcatraz prison break

U.S. Marshalls Release 60-Year Progressed Photos of Alcatraz Escapees