"You should have telephoned the hotel, sent a pneumatic"

     In 1875, like many other cities, including London, Paris and Prague, Vienna established a pneumatic tube system to deliver letters and telegrams through pressurized air tubes. It was invented by the Scottish engineer William Murdoch in the 19th century. Pneumatic post systems were used in several large cities starting in the second half of the 19th century. Vienna’s system was in service through 1957.