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Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
1964 Bell System telephone technicians
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Telco Cross-box drawing
Twisted-pair outside telephone cable.
1964 Bell System telephone technicians
Telco Cross-box drawing
Twisted-pair outside telephone cable.