Columbia subject headings:
Harvard subject headings:
Brotherhood of Railway and Steamship Clerks, Freight Handlers, Express, and Station Employes.
Harrison, George M. (George McGregor)
Harrison, George McGregor, 1891-
Princeton subject headings:
Brotherhood of Railway and Steamship Clerks, Freight Handlers, Express, and Station Employes.
Harrison, George M. (George McGregor)
Railroads--Employees--Labor unions--United States.
Railroads--United States--Employees.