Author
Pennsylvania Railroad
5
National Railway Historical Society
2
Ashcroft, John, comp
1
Baltimore and Ohio Railroad Company
1
Brotherhood of Locomotive Engineers (U.S.)
1
Central Railroad of New Jersey
1
Friends of the Railroad Museum of Pennsylvania
1
Mutual Beneficial Association of Rail Transportation Employees
1
Railroad Station Historical Society (Crete, Neb.)
1
Railway Reporter Company
1
Reading Company
1