Gibbons, C. E. (1846). Speech of Mr. Gibbons, of Philadelphia: In Senate, February 16, 1846, on the bill granting the right of way to the Baltimore and Ohio Railroad to Pittsburg [i.e. Pittsburgh]. [Washington, DC: s.n..

Gibbons, Charles E. Speech of Mr. Gibbons, of Philadelphia: In Senate, February 16, 1846, On the Bill Granting the Right of Way to the Baltimore and Ohio Railroad to Pittsburg [i.e. Pittsburgh]. [Washington, DC: s.n., 1846.

Gibbons, Charles E. Speech of Mr. Gibbons, of Philadelphia: In Senate, February 16, 1846, On the Bill Granting the Right of Way to the Baltimore and Ohio Railroad to Pittsburg [i.e. Pittsburgh]. [Washington, DC: s.n., 1846.