Reddit reviews The Gentile Times Reconsidered

Maybe this will help?

http://en.wikipedia.org/wiki/Siege_of_Jerusalem_(587_BC)

http://www.livius.org/cg-cm/chronicles/abc5/jerusalem.html

http://en.wikipedia.org/wiki/Babylonian_captivity

http://books.google.co.uk/books?id=-MnE5T_0RbMC&pg=PA355&lpg=PA355&dq=gave+the+Jews+permission+to+return+to+Yehud+province+and+to+rebuild+the

http://books.google.com.au/books?id=hwExATCqwvwC&printsec=frontcover&dq=Yahwism+after+the+exile&source=bl&ots=6cZeYs-x81&sig=HZUo4o__HEHM-lQRPR_V0qbnlXc&hl=en&ei=PF0fTPflNsS3cd2yveUM&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBQQ6AEwAA#v=onepage&q&f=false

http://books.google.com.au/books?id=1zi2i_C1aNkC&printsec=frontcover&dq=Judah+and+the+Judeans+in+the+Persian+period&source=bl&ots=D7Qs2W9sU8&sig=GMNEhjkzVF1tnXyuvX6osqtdhLU&hl=en&ei=moIUTOjKJoLJcf-3-JoM&sa=X&oi=book_result&ct=result&resnum=3&ved=0CCAQ6AEwAg#v=onepage&q&f=false

Please note that I have not read any of the actual books I linked, so I can't say definitively that they have what you are looking for.

I'd also like to add that JWFacts, though not acceptable to your family, has an extensive article written about the claims of the WT (and Chuckie Russel's calculations) for the 607 BCE date. In that article are several citations for source material. I'll list a few of them here:

Raymond Philip Dougherty's Nabonidus and Belshazzar, Yale University Press, page 10

The Dictionary of Biblical Archaeology, page 274

The Gentile Times Reconsidered, Carl O. Jonsson

And, as an added bonus for your purchase of this comment for the low, low price of 3 easy installment payments of $19.99 US (no refunds), I'll throw in some extra source links just because I like you and your request for historical information.

http://www.607v587.com/

http://jeffro77.wordpress.com/

The problem that you're going to face in trying to prove the whole 607 BCE vs. the actual 587 BCE date is that most historical authors take it as a matter of fact that 587 BCE is the actual date due to mountains of historical evidence (tablets, stelae, tax documents, chronicles, etc.) The only people who seem to think that 607 BCE is the actual date for the fall of Jerusalem are Jehovah's Witnesses (and a few Millerite leftovers from the end of the 1870's). Unfortunately, as is common for Watchtower and it's followers, when they are presented with the reams of actual historical records that support real history they stick their fingers in their ears and shout "LALALALALALA I CAN'T HEAR YOU LALALALALA!" because, as a good JW should know, when the facts don't support their suppositions then it's DEMONS and SATAN manipulating the data.

In other words, if you're looking for actual facts to sway your family's opinions, it's not likely to happen. I'm not saying that you shouldn't try... just be aware of the likely outcome so you aren't disappointed too much. Many (perhaps most?) people decide on what they believe for largely emotional reasons. This means that data and facts alone are often not enough to sway them. For proof, look at global climate change deniers, creationists, and all the other swirling pools of ignorant humanity who refuse to believe science when the evidence is laid before them (I'm looking at you, Senator Ted Cruz, you jackassed idiot.)

1. Crisis of Conscience. 2) The Gentile Times Reconsidered. 3) Jehovah's Witnesses And The United Nations. 4) The Early History of God: Yahweh and the Other Deities in Ancient Israel (Biblical Resource Series). 5) The God Delusion.

The Gentile Times Reconsidered by Carl Olof Jonsson

I would strongly disagree with that.

Have you read The Gentile Times Reconsidered by Carl Olof Jonnson?

This is the most well-researched treatise that examines the fall of Jerusalem in excruciating detail, and shows how to arrive at 586/587 through archeological artefacts.

A couple of books by James Penton to consider:

Apocalypse Delayed -
https://www.amazon.com/Apocalypse-Delayed-Story-Jehovahs-Witnesses/dp/0802079733

JWs and the Third Reich -
https://www.amazon.com/Jehovahs-Witnesses-Third-Reich-Persecution/dp/0802089275

And Carl Olaf Jonsson:

Sign of the Last Days-When? -
https://www.amazon.com/Sign-Last-Days-When-Jonsson/dp/0914675095

The Gentile Times Reconsidered -
https://www.amazon.com/Gentile-Times-Reconsidered-Carl-Jonsson/dp/0914675079