ɹˈæbaɪ ɹˈuːvən pˈuːpkoʊ pˈʌblɪʃt ɐ sˈɛfɚ baɪ ðə nˈeɪm ʌv tˈoːɹəz ɹˈuːvən ɪn fɪlɐdˈɛlfiə ɪn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi, kəntˈeɪnɪŋ ɐ wˈɔːɹm ˌæpɹəbˈeɪʃən baɪ ɹˈæbaɪ ˈɪsɚ zˈælmən mˈɛltsɚ ðæt pɹˈeɪzᵻz ðɪ ˈɔːθɚz fˈɑːðɚ.
Rabbi Reuven Poupko published a Sefer by the name of Toras Reuven in Philadelphia in 1940, containing a warm approbation by Rabbi Isser Zalman Meltzer that praises the author's father.