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Glafcke's improvement in prison construction. Iron bars do a prison make. Fluid-filled pipes to signal any breakage.
Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Wednesday 28 October 2009
- Posted on
- Wednesday 28 October 2009
- Tags
- detention, escape, lockup, prevention, prisoner
- Visits
- 1311