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