One of the false ventilator grilles that the Anglin Brothers and Frank Morris used to conceal holes they drilled in their cells. It is shown here with the board from which it was cut. The escapees climbed through the tunnel hole into the utility corridors behind their cells. From there, they climbed up to the roof of the cellhouse. Canvas board, soap, paint, metal. L 25, W 16, H 9 cm Golden Gate National Recreation Area, GOGA 356

http://www.cr.nps.gov/museum/exhibits/alca/exb/FederalPrison/Inmates/Escapes/1962Escape/goga356_grill_fake2_exb.html archive copy at the Wayback Machine

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