ˈeɪtkən ɪz kɹˈɛdɪɾᵻd æz kˈoʊwˈɪnɚɹ ʌvðɪ ɐmˈɛɹɪkən ɡɹˈænd pɹˈaɪz ɹˈeɪs, wˌɪtʃ wʌz hˈɛld æt ðə sˈæntə mˈɑːnɪkɚ ɹˈoʊd ɹˈeɪs kˈoːɹs ˌɔn nˈɑːv ˈeɪtiːn, nˈaɪntiːnhˈʌndɹɪd sˈɪkstiːn.
Aitken is credited as co-winner of the American Grand Prize race, which was held at the Santa Monica Road Race Course on Nov 18, 1916.