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Médias: Objets- Médias: Images
- Groupes: Milton - P. L. Robertson Collection
- Année: 1969
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- P. L. Robertson employees recognized for 25 & 40 years of service. 1969.
For further information regarding the P. L. Robertson Co., please consult "P. L., inventor of the Robertson Screw." by Ken Lamb. For further information regarding the P. L. Robertson Co., please consult "P. L., inventor of the Robertson Screw." by Ken Lamb.Milton Historical Society
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