Pneumatic Parcel Post, An Attempt To Supersede The Carrier
17 September 1904 - "The present scheme to undermine London with pneumatic tubes for the conveyance of parcels and letters is a revival. A Pneumatic Despatch Company Act was passed in 1859, and between 1960 and 1865 tubes were laid down in Threadneedle Street, and from Euston Station to Camden Town and Holborn."