ɪn sɛptˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd twˈɛnti fˈaɪv, ɡˈʌn wʌz kənvˈɪktᵻd ʌvðɪ ɐtˈɛmptᵻd ɹˈeɪp əvə stˈuːdənt æt wʌt ɪz nˈaʊ nɔːɹθwˈɛst mɪzˈʊɹɹi stˈeɪt jˌuːnɪvˈɜːsᵻɾi, ˈæftɚɹ ɐkˈɔstɪŋ ðə jˈʌŋ wˈʊmən ˌɔn ɐ ɹˈʊɹɹəl lˈeɪn aʊtsˈaɪd ʌv mˈɛɹivˌɪl.
In September 1925, Gunn was convicted of the attempted rape of a student at what is now Northwest Missouri State University, after accosting the young woman on a rural lane outside of Maryville.