The appendix says:
Recognized Bible translators have used God’s name in the Christian Greek Scriptures. Some of these translators did so long before the New World Translation was produced. These translators and their works include: A Literal Translation of the New Testament . . . From the Text of the Vatican Manuscript, by Herman Heinfetter (1863); The Emphatic Diaglott, by Benjamin Wilson (1864); The Epistles of Paul in Modern English, by George Barker Stevens (1898); St. Paul’s Epistle to the Romans, by W. G. Rutherford (1900); The New Testament Letters, byJ.W.C.Wand, Bishop of London (1946). In addition, in a Spanish translation in the early 20th century, translator Pablo Besson used “Jehova ́ ” at Luke 2:15 and Jude 14, and nearly 100 footnotes in his translation suggest the divine name as a likely rendering. Long before those translations, Hebrew versions of the Christian Greek Scriptures from the 16th century onward used the Tetragrammaton in many passages. In the German language alone, at least 11 versions use "Jehovah” (or the transliteration of the Hebrew “Yahweh”) in the Christian Greek Scriptures, while four translators add the name in parentheses after “Lord.” More than 70 German translations use the divine name in footnotes or commentaries.