[3] In 1913, the train was forced by the PRR to vacate the station so the eastern terminus was changed to the Central Railroad of New Jersey's Communipaw Terminal.

[3] That lasted only five years, as the United States Railroad Administration decided in 1918 to re-route all Lehigh Valley trains into New York Penn Station to centralize traffic.

[1] Prior to the cutback of the Black Diamond the Lehigh operated a counterpart night train from New York City to Buffalo, The Star.

[7] The train was named for the railroad's major cargo, anthracite coal, which was known as "the black diamond" because of its exceptional hardness and high value.

[1] The Lehigh Valley Railroad also operated trains #28 and #29 (the John Wilkes) which also boasted Otto Kuhler-designed streamlining shrouds very similar in design to the Black Diamond.