27 August 1950. This was followed by the establishment of Rural Library Centres in Stanleytown (January 1951), Agricola (May 1951), Bagotsville (June 1952), the Essequibo Boys School (February 1953) and Enmore Government School (May 1954). On December 1, 1966, the year of Guyanese Independence, the Free Public Library took over the prison library service from the Red Cross. The service was extended to the prisons in Georgetown, New Amsterdam, the Mazaruni and Sibley Hall. In 1970, the Public Free Library began to operate a mobile service after the British Ministry for Overseas Development presented the library with the gift of a mobile library in that year. The first areas to be served by the mobile service were Tocville and Peter's Hall. The National Library (1972-present) In 1972, the Public Free Library Ordinance was amended and a new piece of legislation was passed - the Publication and Newspapers Act (Act 4 of 1972) - in order to establish the Public Free Library as a National library, with the additional responsibility of serving as a depository of books printed in Guyana. To reflect its new responsibilities as both a public library and a national library, the library was renamed the National Library of Guyana. These legislative changes also endowed the National Library of Guyana with the responsibility of producing a Guyanese National Bibliography. In 1969 the National Library launched a Building Fund Appeal to raise money to add a third story to the Georgetown library building. The British Government were approached for assistance, and in 1973 they donated steel frames for the extension. In 1997 the Government of Guyana approved the extension plans and committed funds for the work, which began the following year. In 1993, the National Library purchased and installed its first computers, and in 2002 it installed a free internet service. In 2013, the National Library of Guyana celebrated its centenary. It marked the event with a series of public readings and discussions that focused on oral and folkloric narrative traditions in Guyana. Branches The National Library of Guyana has five branches in different parts of the country. These are: The New Amsterdam Branch Library (established 1953) The Linden (formerly MacKenzie) Branch Library (established 1955) The Ruimveldt Branch Library (established 1975) The Bagotville Branch Library The Corriverton Branch Library (established 1993) Services National Library Services Since 1972, the National Library of Guyana has served as the legal copyright library