Between 1952 and 1957, the CIA, in an operation codenamed Aedinosaur, sent millions of balloons carrying copies of the novel into Poland, Hungary and Czechoslovakia, whose air forces tried to shoot the balloons down.
bᵻtwˌiːn nˈaɪntiːnhˈʌndɹɪd fˈɪfti tˈuː ænd nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɛvən, ðə sˌiːˌaɪˈeɪ, ɪn ɐn ˌɑːpɚɹˈeɪʃən kˈoʊdneɪmd iːdˈɪnəsˌɔːɹ, sˈɛnt mˈɪliənz ʌv bəlˈuːnz kˈæɹiɪŋ kˈɑːpɪz ʌvðə nˈɑːvəl ˌɪntʊ pˈoʊlənd, hˈʌŋɡɚɹi ænd tʃˌɛkəsləvˈækiə, hˌuːz ˈɛɹ fˈoːɹsᵻz tɹˈaɪd tə ʃˈuːt ðə bəlˈuːnz dˈaʊn.