( CNN ) -- Hundreds of secret files from the Argentinean dictatorship have been uncovered , including `` blacklists '' that singled out more than 300 artists , actors and writers . Among those the military junta deemed `` dangerous '' : novelist Julio Cortazar , singer Mercedes Sosa and actress Norma Aleandro . These three , for example , spent the dictatorship years abroad : Sosa and Aleandro in exile and Cortazar in France . These cultural figures were categorized as `` F1 '' to `` F4 , '' corresponding to their perceived risk to the state , Defense Minister Agustin Rossi said Monday when he unveiled the findings . Those labeled F1 were considered low-risk , and F4s were those seen as most dangerous to the dictatorship . The works of these artists were banned or censored during the dictatorship , from 1976 to 1983 . Up to 30,000 students , labor leaders , intellectuals and leftists who ran afoul of the dictatorship because of their political views disappeared or were held in secret jails and torture centers during the so-called Dirty War . The documents -- 1,500 in total -- are all from the secret files of the military junta , Rossi said . The files were found in the basement of the building that houses the air force headquarters , Rossi said , according to the state-run Telam news agency . The files have `` historical and judicial '' value , Rossi told a radio station Tuesday . `` Thirty years since the return to democracy , there may still exist documentation that can be useful '' to reconstruct details from the dictatorship , he said . Hebe de Bonafini of the human rights group Mothers of the Plaza de Mayo gave credit to the military for finding the documents and making their existence known . `` There will be things that we know and things that we wo n't , but the important things is that there are 1,500 unexpected files that come at an unexpected moment , '' she told Telam .
1,500 files from the Argentine dictatorship were uncovered . The files include blacklists of some cultural icons . Comment: