ðɪ ˈɪpswɪtʃ stɹˈiːt lˈaɪn wʌz ɛkstˈɛndᵻd tə tʃˈɛstnʌt hˈɪl ɪn lˈeɪt nˈaɪntiːnhˈʌndɹɪd, ænd ðə bˈɔstən ænd wˈʊstɚ stɹˈiːt ɹˈeɪlweɪ bˈiː ænd dˈʌbəljˌuː bɪɡˈæn ɹˈʌnɪŋ ɔnðə tʃˈɛstnʌt hˈɪl tɹˈæks ɪn mˈeɪ nˈaɪntiːnhˈʌndɹɪd θɹˈiː.
The Ipswich Street line was extended to Chestnut Hill in late 1900, and the Boston and Worcester Street Railway (B&W) began running on the Chestnut Hill tracks in May 1903.