Great Drain just north of the State Prison, showing built wall of the prison. Corridor drain at lower left ... 3903 Horizontal (normal) ... November 1949
General views of the northwest room. The State Prison was published as Poros Building in Hesperia 20 (1951) ... east 2829 Horizontal (normal) ... 7-8 November 1949
North wall of the "Poros Building Annex" abutting against back of early Wall Z. The State Prison was published as Poros Building in Hesperia 20 (1951) ... west 2555 Horizontal (normal) ... 14 Apr 1949
