Leonor Fresnel Loree

Loree obtained a Bachelor of Science degree in 1877, a Master of Science in 1880, a Civil Engineering degree in 1896 and a Doctor of Law in 1917, all from Rutgers College. He also obtained a Doctor of Engineering degree from Rensselaer Polytechnic Institute in 1933.

Pennsylvania Railroad: Assistant Engineer of Chicago Division 1883-1885, Engineer of Maintenance of Way (on western division of CStL&P) 1885-1888, Engineer of Maintenance of Way (on Cleveland and Pittsburgh Division of Lines West) 1888-1889, Superintendent (Cleveland and Pittsburgh Division) 1889-1896, General Manager (of Lines West) 1896-1901, Fourth Vice President (of Lines West) 1901-1901, Director 1901-1904

Baltimore and Ohio Railroad: president 1901 - 1904, board member until February 1922

Chicago, Rock Island and Pacific Railroad president 1904-1904

Kansas City Southern Railway: chairman of board 1905-1906. chairman of executive committee 1906-1909, chairman 1909-1918, president 1918 - 1920

Missouri-Kansas-Texas Railroad: chairman 1926 - 1928

Delaware and Hudson Railroad: president 1907 - 1938

In 1903, Loree, together with Frank PJ Patenall, received U.S. patent 733,981, for the upper quadrant semaphore, which soon became the most widely used form of railroad lineside signal in North America. Railroads continued to install them until the 1940s.

In 1906 a committee of creditors asked Loree to take charge of the Kansas City Southern Railroad. At the time it was considered no more than "two streaks of rust, its engines lost steam, the men were disheartened and the stations were shacks." After Loree gave his initial inspection, in a speech in front of the financial community, he ended his professional and technical description of the railroad line by stating, "This is a helluva way to run a railroad".

Loree was a Trustee at Rutgers University from 1909 to 1940 and was Chairman of the Rutgers Board of Trustees Committee on New Jersey College for Women (now Douglass College) until 1938. He was the donor of the New Jersey College for Women Athletic Field (Antilles Field). Rutgers has a building named after him, Leonor Fresnel Loree, erected in 1963 on the Douglass campus.

In 1923, Loree was a principal founder of The Newcomen Society in North America, a learned society promoting engineering, technology and free enterprise.