Author
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Maryland
6
Newcomen Society in North America
6
Ohio and Pennsylvania Rail-Road Company
6
Pennsylvania Society for the Promotion of Internal Improvements in the Commonwealth
6
Philadelphia (Pa.). Councils
6
Philadelphia Board of Trade
6
Philadelphia Citizens
6
Philadelphia, Wilmington, and Baltimore Rail Road Company
6
Rohrbeck, Benson W.
6
Swann, Thomas, 1805-1883
6
The J. G. Brill Company
6
Williamsport and Elmira Railroad Company
6
Association of American Railroads. Railroad Committee for the Study of Transportation
5
Atterbury, William Wallace, 1866-1935
5
Camden and Amboy Railroad and Transportation Co
5
Chester Valley Railroad Company
5
Garrett, John W. 1820-1884
5
Girard Life Insurance, Annuity and Trust Company of Philadelphia
5
Mine Hill and Schuylkill Haven Railroad Company
5
Pennsylvania Schuylkill Valley Railroad Company,
5
Pennsylvania Supreme Court Eastern District
5
Philadelphia, Germantown, and Norristown Rail Road Company
5
Rand McNally and Company
5
Read, John M. 1797-1874
5
Springirth, Kenneth C.
5
Stockton, Robert Field, 1795-1866
5
Virginia
5
YA Pamphlet Collection (Library of Congress)
5
Association of American Railroads. Bureau of Railway Economics
4
Association of American Railroads. Bureau of Railway Economics. Library
4
Bernhart, Benjamin L., (author)
4
Board of Trade of Pittsburgh (Pittsburgh, Pa.)
4
Catawissa Railroad Company,
4
Catawissa, Williamsport and Erie Railroad Company
4
Cleveland and Pittsburgh Railroad Company
4
Clymer, Hiester, 1827-1884
4
Elliott, Howard, 1860-1928
4
Foesig, Harry
4
Gay, Edward F.
4
Girard Trust Company
4
Gowen, Franklin B. 1836-1889
4
Harrisburg, Portsmouth, Mount Joy, and Lancaster Railroad Company
4
Historical Society of Pennsylvania
4
Knight, J. 1787-1858
4
Lentz, Harry David, 1889-
4
McHenry, George
4
Munsell, Joel, 1808-1880
4
National Railway Historical Society
4
Northern Pacific Railroad Co
4
Pennsylvania Governor (1835-1839 : Joseph Ritner)
4
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