Croy's novel The Lady from Colorado was the basis for an opera of the same title by Robert Ward; Croy was in attendance at its 1964 world premiere by the Central City Opera.
kɹˈɔɪz nˈɑːvəl ðə lˈeɪdi fɹʌm kˌɑːlɚɹˈɑːdoʊ wʌzðə bˈeɪsɪs fɚɹən ˈɑːpɚɹə ʌvðə sˈeɪm tˈaɪɾəl baɪ ɹˈɑːbɚt wˈɔːɹd; kɹˈɔɪ wʌz ɪn ɐtˈɛndəns æɾ ɪts nˈaɪntiːnhˈʌndɹɪd sˈɪksti fˈoːɹ wˈɜːld pɹəmˈɪɹ baɪ ðə sˈɛntɹəl sˈɪɾi ˈɑːpɚɹə.