How can I view the Papyri of the Gospel of John in Logos?
Well, assuming you have the interactive New Testament Manuscript Explorer, you can select 'Mat-John', see the associated mss's, select a desire one, and see the mss on the web. Doesn't show specific John-ranges.
Comfort's Text of the Earliest NT Greek Manuscripts has the earliest ones, more directly accessible (type in a John reference), but not tagged/gloss'd.