The Nuttall Encyclopedia
Biblical scholar, born in Rhenish Prussia, professor of Theology at Erlangen; distinguished for his eminent scholarship in connection with the matter especially of the New Testament canon; b . 1838.
Wood, James, ed. Entry for 'Zahn, Theodor'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/z/zahn-theodor.html. Frederick Warne & Co Ltd. London. 1900.