How can i find a good text on the Manuscript History of the New Testament Gospels?
The closest is probably Metzger's 'Early Versions of the New Testament' (not in Logos). But that and Comfort's various entries, don't spend too much time on the papyri (your earlier questions), vs the major manuscripts, vs translation usage. Before the text-form arena collapsed, discussions of the assigned text forms (eg Western text) often had arguments regarding the gospels.
Technical commentaries are needed, and then only on specific verses.