When I went to the British Museum many years ago on a JW guided trip the ignorance of the guide made me laugh even then, the JW guide was trying to say the earliest translation of the Bible in to English was such and such a date, as I stood next to a manuscript in early english of part of the Bible, he was unaware of what I was looking at.
Later he showed me the Codex Sinaiticus, 2 pages of which which happened to be prominently displayed at the time, he said "Do you want to see the Divine Name in here?" I agreed, and he said "Look at the bottom of the right hand page", I guess he had fooled himself it was there, and others he told this to, I scoured the page, and no sign of the Name of course, it does not appear in any form anywhere in that N.T Manuscript. Not in Gk, Aramaic or Hebrew. And this is the oldest complete N.T manuscript we have.
Another Museum trip would be good, with people whose eyes are wide open this time !