Addendum:
Also, note that part of the original title contained "Herald of Christ's Presence." This was in 1879. Russell believed that Christ had already come invisibly in 1874. He was saying that Christ was ALREADY present in 1879--way before 1914!
Another aside. The Dec. 15, 1908 Zion's Watch Tower under "The Watch Tower Subscription List" tells us why the name "Zion" was dropped from the name.
"With the new year we expect to drop the word 'Zion' in the title of our Journal, because many of the friends inform us that the word is objectionable, having been so much used by Mr. Dowie and his followers. They report that our journal is frequently cast aside under the supposition that it is published under Dowie's auspices, or in some manner associated with Zion City, which he founded. The new name, The Watch Tower, is the one by which the Journal is usually mentioned. It appears, further, that African churches and papers use the word Zion extensively, which has led to the inquiry whether or not our journal is published and generally read by colored people."