Before close of World War II 95% of railroad's telegraph traffic was handled by Morse operators but broadening services necessitated doubling or trebling existing circuit mileage and almost complete mechanization of telegraphic facilities by teletype; details of system adopted at Baltimore office, and notes on advantages derived.
Teletype speeds operations on B and O
Telegraph Telephone Age
1948
Aufsatz (Zeitschrift)
Englisch
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