The Chicago Tunnel Company was the builder and operator of a 2 ft (610 mm) narrow-gauge railway freight tunnel network under downtown Chicago, Illinois. This was regulated by the Interstate Commerce Commission as an interurban even though it operated entirely under central Chicago, did not carry passengers, and was entirely underground.[1] It inspired the construction of the London Post Office Railway.[2]
^William Clark, Vanishing in America – Interurban Trolley, Chicago Tribune, Jul. 6, 1958; p. A9.
^"Unofficial MailRail Website – Home page".
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The ChicagoTunnelCompany was the builder and operator of a 2 ft (610 mm) narrow-gauge railway freight tunnel network under downtown Chicago, Illinois...
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above ground on a 2 ft (610 mm) gauge. (The 2 ft (610 mm) gauge ChicagoTunnelCompany continued underground operation as a common carrier freight subway...
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