He was initially elected to the British Astronomical Association (BAA) on 27 February 1918 at the invitation of W F Denning and Fiammetta Wilson.
hiː wʌz ɪnˈɪʃəli ᵻlˈɛktᵻd tə ðə bɹˈɪɾɪʃ ɐstɹənˈɑːmɪkəl ɐsˌoʊsɪˈeɪʃən bˌiːˌeɪˈeɪ ˌɔn twˈɛnti sˈɛvən fˈɛbɹuːˌɛɹi nˈaɪntiːnhˈʌndɹɪd ˈeɪtiːn æt ðɪ ɪnvɪtˈeɪʃən ʌv dˈʌbəljˌuː ˈɛf dˈɛnɪŋ ænd fˌaɪəmˈɛɾə wˈɪlsən.