Quickly away, thanks to Pneumatic Doors. Colour lithograph poster promoting the introduction of pneumatic doors on the London Underground. Designed by László Moholy-Nagy and issued by the London Passenger Transport Board, England,
The lure of the Underground, by Alfred Leete, 1927 - Poster Art London Underground's Greatest Designs. A major exhibition at London Transport Museum opening on 15 February 2013 in celebration of anniversary of the Underground.