ɪn dʒuːlˈaɪ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti, hiː wʌz pˈɜːsənəli ɪnvˈaɪɾᵻd tʊ ɛɡzˈɪbɪt hɪz wˈɜːk æt ðə mjuːzˈiəm ʌv mˈɑːdɚn ˈɑːɹt ɪn nˈuː jˈɔːɹk sˈɪɾi.
In July 1970, he was personally invited to exhibit his work at the Museum of Modern Art in New York City.