The SECOND Oldest Tube: London's Lost Pneumatic Railway

That London has the oldest Tube is well known. What is forgotten is that it has the SECOND as well - a long lost Pneumatic Railway beneath the city streets.

The SECOND Oldest Tube: London's Lost Pneumatic Railway

HENRY CHARLES BECK, MATERIAL CULTURE AND THE LONDON TUBE MAP OF 1933 - Amodern

In which city of the world did the underground metro railway start, and in which year? - Quora

London's Victorian Hyperloop: the forgotten pneumatic railway beneath the capital's streets

London's Retired Tube Trains Live on an Island - Atlas Obscura

Mail Rail delivers an underground history lesson at London's new Postal Museum, London holidays

The Pneumatic Despatch Railway - The Surviving Record - The Postal Museum

Victorian high tech: the pneumatic railway – Lisahistory

Victorian high tech: the pneumatic railway – Lisahistory

Mail Rail delivers an underground history lesson at London's new Postal Museum, London holidays

Secrets of underground London revealed, London Evening Standard

History of New York City's elevated train - Curbed NY