bᵻtwˌiːn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi sˈɛvən ænd nˈaɪntiːnhˈʌndɹɪd fˈɪfti wˈʌn, ʃwˈɔːɹts wʌzðɪ ˈoʊnli ɹˈaɪɾɚɹ ɔnðə sˈuːpɚmˌæn stɹˈɪp, ænd hiː kəntˈɪnjuːd ɔnðə stɹˈɪp ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd fˈɪfti ˈeɪt.
Between 1947 and 1951, Schwartz was the only writer on the Superman strip, and he continued on the strip until 1958.