wˈɪlkɑːks dˈaɪd ˌɔn sɛptˈɛmbɚ fˈoːɹ, nˈaɪntiːnhˈʌndɹɪd twˈɛnti θɹˈiː, æɾ æltˈuːnə spˈiːdweɪ bˈoːɹd tɹˈæk ɪn tˈaɪɹoʊn, pˌɛnsɪlvˈeɪniə, ɪn ɐ kˈɑːɹ kɹˈæʃ.
Wilcox died on September 4, 1923, at Altoona Speedway board track in Tyrone, Pennsylvania, in a car crash.