28 February 1938, onwards, Tata Sons' Aviation division, now renamed Tata Airlines, began a Karachi to Colombo airmail service via Madras and Trichinopoly. On 2 March 1938, the Bombay-Trivandrum air service was extended to Trichinopoly. The first organised postal service was established between Madras and Calcutta by Governor Edward Harrison in 1712. After reform and regularisation, a new postal system was started by Sir Archibald Campbell and was introduced on 1 June 1786. The Presidency was divided into three postal divisions: Madras North up to Ganjam, Madras South-West to Anjengo (erstwhile Travancore) and Madras West, up to Vellore. In the same year, a link with Bombay was established then in 1837, the Madras, Bombay and Calcutta mail services were integrated to form the All-India Service. On 1 October 1854, the first stamps were issued by the Imperial Postal Service. The General Post Office (GPO), Madras, was established by Sir Archibald Campbell in 1786. In 1872–73, a bimonthly sea-mail service began between Madras and Rangoon. This was followed by the commencement of a fortnightly sea-mail service between Madras and ports on the eastern coast. Madras was linked to the rest of the world through telegraphs in 1853 and a civilian telegraph service was introduced on 1 February 1855. Soon afterwards, telegraph lines linked Madras and Ootacamund with other cities in India. A Telegraph department was set up in 1854, with a Deputy Superintendent stationed in Madras city. The Colombo-Talaimannar telegraph line established in 1858, was extended to Madras in 1882, thereby connecting the city with Ceylon. Telephones were introduced in the presidency in 1881 and on 19 November 1881, the first telephone exchange with 17 connections was established at Errabalu Street in Madras. A wireless telegraphy service was established between Madras and Port Blair in 1920 and in 1936, the Indo-Burma radio telephone service was established between Madras and Rangoon. Education The first schools offering Western-style education in the presidency were established in Madras during the 18th century. In 1822, a Board of Public Instruction was created based on the recommendations of Sir Thomas Munro, after which schools teaching students in vernacular language was established. A central training school was set up in Madras as per Munro's scheme. However, this system appeared to be a failure and the policy was altered in 1836 in order to promote European literature and science. The Board of Public Instruction was superseded by a Committee