https://www.hmdb.org/m.asp?m=17050
Historial Marker Database.
Marker for first train order transmitted by telegraph. Mary Ellen Coghlan, 2009. Via Historial Marker Database.
Marker for first train order transmitted by telegraph. Mary Ellen Coghlan, 2009. Via Historial Marker Database.
https://www.hmdb.org/m.asp?m=17050