ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti wˈʌn hiː pˈʌblɪʃt ɐ θɹˈiːhˈʌndɹɪd"daɪˈæmɪɾɚ mˈæp ʌvðə mˈuːn, kənsˈɪdɚd baɪ sˌʌm æz ðə kˌʌlmᵻnˈeɪʃən ʌvðɪ ˈɑːɹt ʌv sˌɛlənˈɑːɡɹəfi pɹˈaɪɚ tə ðə spˈeɪs ˈeɪdʒ.
In 1951 he published a 300"-diameter map of the Moon, considered by some as the culmination of the art of selenography prior to the space age.