Folder: S.F. Islands-Alcatraz-Prison Breaks-May, 1946.
Newscopy: "This is a scene from the riots of May, 1946. In the cell block area marked 1, the convicts launched the first phase of their fight. Section 2 is general area into which rioters were driven. Grenade fire then forced them into area 3, from where they retreated into interior areas. A Marine (circle) is shown as he exploded a grenade against the section 2, where convicts were holding out at the time. Insets at lower right show grenades making direct hits in lower and upper tiers.".
