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- Bakewell, Thomas, 1792-1866 1 results
- Baldwin-Lima-Hamilton Corporation 1 results
- Ball, Don 1 results
- Baltimore 1 results
- Baltimore (Md.) 2 results
- Baltimore (Md.) Citizens 1 results
- Baltimore (Md.) City Directors of the Baltimore and Ohio Railroad Company 1 results
- Baltimore (Md.) Delegation to the Susquehanna Railroad Convention 1 results
- Baltimore (Md.). City Council 1 results
- Baltimore (Md.). Mayor 1 results
- Baltimore Board of Trade (Baltimore, Md.) 1 results
- Baltimore Citizens 3 results
- Baltimore and Eastern Railroad Company 1 results
- Baltimore and Ohio Railaroad Co 1 results
- Baltimore and Ohio Railroad Co 3 results
- Baltimore and Ohio Railroad Co Committee on Finance 1 results
- Baltimore and Ohio Railroad Company 45 results
- Baltimore and Ohio Railroad Company Central Committee on Public Relations 1 results
- Baltimore and Ohio Railroad Company. Committee on Western Connections 1 results
- Baltimore and Ohio Railroad Company. Public Relations Department 1 results
- Baltimore and Ohio Railroad Company. Relief Department 1 results
- Baltimore and Susquehanna Railroad Company 1 results
- Bank of the United States (Pennsylvania : 1836-1841) 3 results
- Barclay Coal Company 1 results
- Barclay Railroad Company 1 results
- Barnes, John H. 1 results
- Barney, Joshua, 1799 or 1800-1867 1 results
- Barr, Lockwood 1 results
- Barriger, John W. (John Walker), 1899-1976 1 results
- Barry, Steve 1 results
- Bartholomew, J. 1 results
- Bastoni, Gerald 1 results
- Beach, Ephraim 1 results
- Beaver Meadow Railroad and Coal Company 2 results
- Beaver, Roy C. 1 results
- Bell, William 1 results
- Bellas, Hugh, 1780-1863 2 results
- Belvidere Delaware Railroad Company 1 results
- Belvidere Deleware railroad company 1 results
- Bernhart, Benjamin L., 1 results
- Bernhart, Benjamin L., (author) 4 results
- Bernhart, John H. L. Dr., 1 results
- Bernhart, John L. Dr., 1 results
- Berton, Pierre, 1920-2004 1 results
- Bethlehem Railroad Company 2 results
- Bezilla, Michael 1 results
- Bezilla, Michael, 1 results
- Biddle, George W. (George Washington), 1818-1897 1 results
- Bigler, William, 1814-1880 1 results
- Binkerd, Robert Studebaker, 1882- 1 results more…