Other
- Baltimore and Ohio Railroad Company 3 results
- Baltimore and Ohio Railroad Company. Board of Engineers 1 results
- Little Schuylkill and Susquehanna Rail Road Company 1 results
- Long, Stephen H. (Stephen Harriman), 1784-1864 1 results
- Pamphlet Collection (Library of Congress) 1 results
- Pennsylvania. Board of Canal Commissioners 1 results
- Philadelphia & Reading Railroad Co 1 results
- Roberts, Solomon White, 1811-1882 1 results
- Robinson, Moncure, 1802-1891 1 results
- Robinson, Wirt 1 results
- Sullivan, John L. (John Langdon), 1777-1865 1 results