Tour of Christian History
Harris, J. Rendel. "Integrity of the Teaching and Genealogical Relations of the Authorities to Its Text." The Teaching of the Apostles, newly edited, with facsimile text and a commentary, for the Johns Hopkins University, Baltimore, from the MS. of the Holy Sepulchre (Convent of the Greek Church) Jerusalem. Baltimore: Publication Agency of the Johns Hopkins University, 1887, 90-94.
Here, as earlier, Harris' Table of Contents and the actual content of his book appear to diverge. While we would expect to find information about the relation of different secondary materials to the text of the Didache, instead, Harris has a conclusion of his argument about Hebraisms.
Harris concludes that the entire Didache can be shown to have Hebraic character, not just the Two Ways material. The manuscript tradition of the Jerusalem Codex appear to be of a very early origin, more so that other fragments. Based on that early provenance, Harris concludes that the entire work fits a very early context, prior to the time of the Epistle of Jude (Harris 1887, 94).