Jehovah in the New Testament - and in the New World Translation #798703

The New World Translation, the official translation of the Jehovah’s Witnesses, claims to “restore” God’s name 237 times in the Christian Scriptures (New Testament). In order for a word to be “restored” to an ancient biblical text, it must be substantiated that the inspired writer actually used that word in the original text and that it was subsequently removed.
Was it the case for the Divine Name in the Greek Christian Scriptures?
Has new evidence finally been found showing the presence of the Tetragrammaton in early Christian Scripture manuscripts?
Giuseppe Guarino has edited here two books:
 
  The Divine Name in the New World Translation
  Jehovah in the New Testament

Both books have been collected here only for the good of those who prefer to read printed books.
The free digital versions are available at
www.tetragrammaton.org