Author
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Andrews, Clinton T.
2
Andrews, Israel D. 1813-1871
1
Apfelbaum, Charles
1
Appel, Charles G.
1
Applegate, Howard L.
1
Archer, Robert F.
1
Arnesen, Eric
1
Arnold, Andrew Bernard
2
Arnold, Robert A.
1
Ashbridge, Thomas
1
Ashcroft, John, comp
1
Associated Railroads of Pennsylvania and New Jersey
1
Association of American Railroads
15
Association of American Railroads (Washington, D.C.)
1
Association of American Railroads. Bureau of Railway Economics
4
Association of American Railroads. Bureau of Railway Economics. Library
4
Association of American Railroads. Railroad Committee for the Study of Transportation
5
Association of Railway Executives (U.S.)
1
Atkinson, Edward, 1827-1905
1
Atkinson, Samuel Coate
1
Atlantic and Great Western Railway Co
1
Atlantic and Great Western Railway Company
1
Atlantic and Pacific Railroad
1
Atlas Portland Cement Co. (New York)
1
Atterbury, William Wallace, 1866-1935
5
Avery, John, 1819-1902
1
Awbury Arboretum (Philadelphia, Pa.)
1
Bache, Hartman, 1797-1872
1
Bache, Hartman, 797-1872
1
Bacon, Margaret Hope
1
Baer, Christopher T.
1
Baetjer, Harold H.
1
Baily, Joseph, b. 1810
1
Baily, Joshua A.
1
Baily, Joshua L.
1
Baily, Joshua Longstreth, 1826-1916
1
Baird, Spencer Fullerton, 1823-1887
1
Baker, G. W.
1
Baker, Joseph B.
1
Bakewell, Thomas, 1792-1866
1
Baldwin Locomotive Works
2
Baldwin-Lima-Hamilton Corporation
1
Ball, Don
1
Ball, George W. I.
1
Baltimore
1
Baltimore (Md.)
2
Baltimore (Md.) Circuit Court
1
Baltimore (Md.) Citizens
2
Baltimore (Md.) City Directors of the Baltimore and Ohio Railroad Company
2
Baltimore (Md.) Delegation to the Susquehanna Railroad Convention
1
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