The Air Mail Service is completing is 100 years. On this historic occasion, Uttar Pradesh Governor B L Joshi released of a set of four stamps. A special Indian Air Force helicopter with letters flew again this morning on the same route from Allahabad to Naini to remember the historic day and pay tribute to the pioneers of Air Mail Services.The world first official Airmail was flew from Allahabad to Naini on 18th February 1911.