Here are some links to old publication:
http://www.a2z.org/wtarchive/archive.htm#magazines
http://www.archive.org/details/WatchTowerBibleandTractSocietyofPennsylvaniaWatchTowerpubs_0
Barbara Anderson's link also contains court documents on child abuse case in US and some other scans of interesting books.
http://www.watchtowerdocuments.com/downloads/
I recommend reading Carl Olof Jonsson's book Gentile Times Reconsidered, you can find this book on the web if you search for it, Amazon has it and it quite cheap and is priceless for anyone believing in wts 1914 dogma. Very detailed research on 607BC vs 586/7BC.
Another book is a great read that I recommend is Charles Russell's Studies in the Scriptures vol 3 or Thy Kingdom Come book which you will be able to find in any of the above links. It is an eye opened what Russell taught and how what calculations he used to teach Christ's return in 1874.
And Crisis Of Conscience is a good autobiography of Ray Franz who was a GB member until he was pushed out and he goes through the history of WTS and the internal struggle between GB members and the doctrine.
Most JWs can't handle the fact that they have been conned and thus they refuse to examine the facts or they just claim it's old light and it doesn't matter but people who have awoken can realize that the past is very important to their belief system. Good luck on you research.
Oh ya, here are interesting newspaper scans published about Russell by Brooklyn Eagle News which Russell suied and lost. I've scanned these and tried to make them as readable as possible. Any of these scans can be had for free from The Brooklyn library who were kind enough to scan them for me and send my physical copies. The contain some info from the court hearings where it was revealed that WTS was Russell and couldn't be said that others had a voice in it as Russell owned 95 or so percent of the company as well as it's revealed that Russell owned vased intered in other companies including a trust company and interest in the cemetary where he was later buried. (I think that was the cemetary he was buried in)
http://www.archive.org/details/1909-1916BrooklynEagleNewsOnRussell