Hi,
I found an interesting resource, some charts dated to the early 20th Century by theologian Clarence Larkin.
Reading through his charts you would think they were drawn by C.T. Russell as they have the exact same style as found in Studies in the Scriptures, use the name Jehovah, and according to the linked chart below, use 606BCE as the date for the fall of Jerusalem.
I could spend hours looking at these, and if you have a JW background you will see many familiar teachings. There's also an e-sword module with them all in if anyone's interested. That's where I'm viewing the complete set of 58 diagrams.
http://clarencelarkincharts.com/charts/Clarence_Larkin_Charts_2.html
He included these in his book called "God's Plan and Purpose in the Ages". Sound vaguely familiar?
Splash