<P> Gunsmoke is an American radio and television Western drama series created by director Norman Macdonnell and writer John Meston . The stories take place in and around Dodge City, Kansas, during the settlement of the American West . The central character is lawman Marshal Matt Dillon, played by William Conrad on radio and James Arness on television . When aired in the UK, the television series was initially titled Gun Law, later reverting to Gunsmoke . </P> <P> The radio series ran from 1952 to 1961 . John Dunning wrote that among radio drama enthusiasts, "Gunsmoke is routinely placed among the best shows of any kind and any time ." The television series ran for 20 seasons from 1955 to 1975, and lasted for 635 episodes . At the end of its run in 1975, Los Angeles Times columnist Cecil Smith wrote: "Gunsmoke was the dramatization of the American epic legend of the west . Our own Iliad and Odyssey, created from standard elements of the dime novel and the pulp Western as romanticized by (Ned) Buntline, (Bret) Harte, and (Mark) Twain . It was ever the stuff of legend ." </P> <Table> Gunsmoke <Tr> <Td_colspan="2"> Publicity photo from Gunsmoke's radio version (photo from 1954) </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Western </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 30 minutes </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> Language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> TV adaptations </Th> <Td> Gunsmoke </Td> </Tr> <Tr> <Th> Starring </Th> <Td> William Conrad Parley Baer Howard McNear Georgia Ellis </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Norman Macdonnell John Meston </Td> </Tr> <Tr> <Th> Produced by </Th> <Td> Norman Macdonnell </Td> </Tr> <Tr> <Th> Original release </Th> <Td> April 26, 1952--June 18, 1961 </Td> </Tr> <Tr> <Th> No. of series </Th> <Td> 9 </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 432 </Td> </Tr> <Tr> <Th> Audio format </Th> <Td> Monaural </Td> </Tr> </Table>

How long did gunsmoke stay on the air