A rifle-toting guard stands watch over the northeast corner of the prison circa 1903.  The new cellhouse below him was being built - notice the derricks protruding above the building (the roof had not yet been added).  The Warden's House is visible center left.  The Warden would soon assume residence in the magnificent Administration Building, visible beyond the tower, and the old residence would be razed.

See the slender device on the platform to the left of the guard shack?  It was a small rocket, meant to be shot off in case of escape, thus alerting other guards!