Phonopore Telephone Circuit
- Made:
- 1902 in King's Lynn
- publisher:
- Midland & Great Northern Joint Railway
Instructions, Midland & Great Northern Joint Railway, "To Be Observed by Signalmen and Others Concerned on Duty Between Melton Constable East and Yarmouth Inclusive, Respecting Phonopore Telephone Circuit", March 1902.
Details
- Category:
- Documents
- Object Number:
- 2008-8965
- Materials:
- paper
- Measurements:
-
overall: 250 mm x 189 mm
- type:
- instructions
- credit:
- British Transport Commission
