Tait, E. E. - President of Pittsburgh & Shawmut Railroad. (NY Times, May 22, 1918)
Tait, Thomas James (1864-1940) - Began railroad career with Grand Trunk Railway in 1880 and was promoted through various positions to eventually become manager of transportation for Canadian Pacific Railway; appointed chairman of commissioners for Victorian Railways in Australia, serving from March 1903 to 1911.
Talmadge, H. P. - President of South Carolina Railroad. (Official List 1888, p 177)
Talmadge, O. G. - President of Chicago & Interurban Traction Company. (Illinois PUC, 1915, p 1251)
Tatsumi, Yoshiaki - Chairman of Seibu Railway.
Taverner, William Burgoyne (c. 1880-1958) - New Zealand Minister of Railways 1928-1930.
Taylor, A. M. - President of Orange Belt Railroad. (Official List 1888, p 147)
Taylor, Edward B. - President of Akron & Barberton Railroad and Akron Union Depot; president of Terre Haute & Peoria Railroad. President of Cincinnati, Lebanon & Northern Railway. (Pocket List 1907, pp 187 and 285; NY Times, May 22, 1918; Illinois PUC, 1915, p 1242)
Taylor, H. H. - President of Bellingham Bay & British Columbia Railroad. (Pocket List 1907, p 217)
Taylor, Jas. L. - President of National Association of General Passenger Agents. (Official List 1888, p xxxviii)
Tedder, S. R. - President of Ashley, Drew & Northern Railway. (Congressional Record 1986, p 24914)
Tellier, Paul (born 1939) - President of Canadian National Railway 1992-2002 [succeeded by E. Hunter Harrison]; Railroader of the Year 1997; president of Bombardier 2002-2004.
Temple, Thomas - President of Sebasticook & Moosehead Railroad. (Official List 1888, p 175)
Temple-Nugent-Brydges-Chandos-Grenville, Richard (1823-1889) - Chairman of London & North Western Railway 1857-1861.
Teter, C. F. - President of Cairo & Kanawha Railway. (Pocket List 1907, p 229)
Thatcher, Thomas - Receiver for Centreville, Moravia & Albia Railroad. (Poor's 1887, p 29)
Thayer, Nathaniel - President of Chicago & West Michigan Railway; president of Eastern Kentucky Railroad; president of South Atlantic & Ohio Railroad. (Poor's 1887, p 44; Official List 1888, pp 41, 75 and 177)
Thomson, John Edgar (1808-1874) - President of the Pennsylvania Railroad 1852-1874.
Henry W. Thornton in 1914
Thornton, Henry Worth (1871-1933) - General superintendent of Long Island Rail Road 1911-1914. General manager of Great Eastern Railway (England) 1914-1922. President of Canadian National Railway 1922-1932.
Thrower, J. R. - Roadmaster for Raleigh & Gaston Railroad. (Official List 1888, p 165)
Thurston, W. W. - President of Georgetown & Western Railroad. (Official List 1888, p 87)
Thwing, J. E. - President of Blue Springs, Orange City & Atlantic Railroad. (Poor's 1887, p 17)
Tien-yow, Jeme (1861-1919) - Chinese engineer who oversaw construction of the first railroad built in China without foreign assistance.
Tierney, Paul J. - Chairman of the Intersate Commerce Commission 1968-__. (PC Post, March 15, 1968, p. 3)
Tiffany, Joel - Patentee of the first successful refrigerator car. He was awarded US patent number 193,357 for his design on July 24, 1877.
Tillar, Benjamin D. - President of Atlantic & Danville Railway. (Poor's 1887, p 7)
Tilney, J. D. - Locomotive superintendent for Cape Government Railway's Cape Eastern System.
Tilton, Benjamin E. - President of Syracuse Transit Corporation 1939-__.
Tinkham, William - President and general manager of Providence & Springfield Railroad. (Official List 1888, p 162)
Tod, David (1805-1868) - President of Cleveland & Mahoning Railroad.
Percy R. Todd in 1903
Todd, Percy R. (1859-__) - Vice president of New York, New Haven & Hartford Railroad 1901-__; President of Bangor & Aroostook Railroad. (NY Times, May 22, 1918; Poor's 1917, p 164; The Railroad Men, November 1903)
Todd, Robert I. - President of Terre Haute, Indianapolis & Eastern Traction Company. (Illinois PUC, 1915, p 1274)
Toniette, J. - President of Brimstone Railroad & Canal Company. (Pocket List 1907, p 225)
Topping, J. A. - President of Birmingham Southern Railroad. (Pocket List 1907, p 219)
Tosh, George (1813-1900) - Locomotive superintendent for Maryport & Carlisle Railway 1854-1870 [preceded by __ Scott; succeeded by Hugh Smellie].
Totten, George Muirson (1808-1884) - Chief construction engineer for the Panama Railway.
Tracy, John F. - President of Chicago & North Western Railway.
Trantum, Tad - President of Gulf & Mississippi Railroad. (Congressional Record 1986, p 24914)
Travis, Walter - President of Bangor & Aroostook Railroad. (Congressional Record 1986, p 24914)
Tredway, Dwight - President of St. Louis Cable & Western Railroad. (Official List 1888, p 171)
Tremain, L. - President of Chicago, Peoria & Western Railway. (Pocket List 1907, p 275)
Trevithick, Francis (1812-1877) - Son of Richard Trevithick. Resident engineer for Grand Junction Railway 1840-1841; locomotive superintendent for Grand Junction Railway 1841-1846; locomotive superintendent for London & North Western Railway's Northern Division 1846-1857 [succeeded by John Ramsbottom]
Trevithick, Richard (1771-1833) - Early English steam locomotive designer and builder.
Trimble, Isaac R. (1802-1888) - Surveyor for the early routes of Baltimore & Ohio Railroad; construction engineer for Boston & Providence Railroad; chief engineer for Baltimore & Susquehanna Railroad; chief engineer for Philadelphia, Wilmington & Baltimore Railroad; chief engineer for Philadelphia & Baltimore Central Railroad; superintendent of Baltimore & Potomac Railroad 1859-1861; built President Street Station in Baltimore in 1849.
Troll, John T. - President of Bellaire & St. Clairsville Railway. (Poor's 1887, p 15)
Troup, George (1863-1941) - First official architect of New Zealand Railways; known as "Gingerbread George" for his design of Dunedin station.
Truesdale, William Haynes (1851-1935) - President and general manager of Minneapolis & St. Louis Railway 1887-__; first vice president and general manager of Chicago, Rock Island & Pacific Railroad __-1899; president of Delaware, Lackawanna & Western Railroad 1899-1925 [preceded by Samuel Sloan]; chairman of DL&W __-1930. (Official List 1888, p 123; Pocket List 1907, p 301; Poor's 1917, p 56; NY Times, May 22, 1918)
Trumbull, Frank - President of Colorado & Southern Railway. President of Colorado Midland Railway. President of Colorado Springs & Cripple Creek District Railway. (Pocket List 1907, pp 291 and 293)
Tunstall, Whitmell P. (1810-1854) - Founder of the Richmond & Danville Railroad, a predecessor of Norfolk & Western Railway.
Turnbull, George (1809-1889) - Civil engineer in charge of the 1843 construction of the line from Shakespeare Tunnel to Dover in England; resident engineer for Great Northern Railway (UK) 1846-1849, when he helped develop the plans for Kings Cross Station; chief engineer for East Indian Railway 1850-__, during which he oversaw construction of the first line built from Calcutta in 1851-1862; designed Howrah station in Calcutta.
Turner, J. J. - President of Chicago Union Station; president of Indianapolis Union Railway; president of Vandalia Railroad. (NY Times, May 22, 1918; Illinois PUC, 1915, p 1244)
Turner, N. E. - President of Alabama & Mississippi Railroad. (Pocket List 1907, p 187)
Turpin, Frank (1923-2005) - President of Alaska Raiload 1984-1991; CEO of Alaska Railroad, 1985-1993.
Tuttle, L. - President of Boston & Maine Railroad. (Pocket List 1907, p 221)
Ginery Twichell in the late 1870s
Twichell, Ginery (1811-1883) - Became assistant superintendent of Boston & Worcester Railroad in 1847; promoted to president of Boston & Worcester Railroad in 1857; president of Atchison, Topeka & Santa Fe Railway 1870-1873 [preceded by Henry Keyes; succeeded by Henry Strong]; president of Boston, Barre & Garden Railroad; president of Hoosac Tunnel & Western Railroad.
Tyler, A. L. - President of Anniston & Atlantic Railroad; president of Anniston & Cincinnati Railroad. (Poor's 1887, p 3; Official List 1888, p 3)
Tyler, Daniel (1799-1882) - President of the Norwich & Worcester Railroad. (White 1973, p 42)
Tyler, H. W. - President of Grand Trunk Railway of Canada; president of San Pete Valley Railroad. (Official List 1888, pp 89 and 174)
Tyler, Sidney F. - President and receiver for Shenandoah Valley Railroad. (Official List 1888, p 175)
Henry Worth Thornton - Cropped from a scan of the original photograph available on the Library of Congress website as part of the Bain Collection. The image description page for this photograph (retrieved December 30, 2015) asserts that there are "no known restrictions on publication" and as the photograph was first published in the United States before 1923, my understanding of copyrights is that this image is now in the public domain.
Percy R. Todd - Cropped from a scan of the original image published in The Railroad Men, volume XVII, issue 2, November 1903 (scan available on Google Books). Since this was first published in the United States before 1923, my understanding is that this image is now in the public domain.
Ginery Twichell - Cropped from a scan of the original photo available on the English language edition of Wikipedia (retrieved March 30, 2014); original source listed there is "A History of Brookline, Massachusetts" by John William Denehy (1906), p. 136. Since the photograph was taken in the 1870s and published in the United States before 1923, my understanding of current law is that this image is in the public domain.