http://pec.lib.wvu.edu/record/P164831947Agreement between the Baltimore and Ohio Railroad Company and its train dispatchers represented by the American Train Dispatchers' Association. Pamphlet. "Revised October 1, 1947." Baltimore and Ohio Railroad Company.Baltimore and Ohio Railroad Company--Employees--Rules and practice.Railroads--Employees--Labor unions--United States.American Train Dispatchers' Association.Railroads--Employees--Rules and practice--United States.14256