[LB061401], Letter from Thomas Alva Edison to Charles Henry Coster, January 25th, 1895
https://edisondigital.rutgers.edu/document/LB061401
Transcription
Jany [25th?] 1895 C H Coster Esq [24?] Wall Street New York Friend Coster:- I have invented a system of converting one Railway telegraph circuit into two independent circuits, which is different from the Duplex and Quadruplex as [illegible text] Station cannot be used with these systems and even the terminals are not independent. The system has the “peculiarity” that it will work when the poles are all blown down and Morse useless The system is in use on the Penna R.R. Cy. ([nine wires?]) Illinois Central R.R, Chesapeake and Ohio, B and O, Kansas City Ft. Scott and Memphis R.R New York New Haven and Hartford, Lehigh Valley and other railroads I only charge a small royalty to keep me in [illegible text]. If not inconsistent with your plan of life would you give me a letter introducing my Agent to Mr [Baldwin?] of the Southern Railroad Company stating I have the aforesaid [illegible text] and want to [illegible text] without expense to them a sample [illegible text] so they can [illegible text] if its of any value to them Yours very truly, [Thos. A. Edison?]