We have books dating back to Russell....
Even an 'uncut' Finished Mystery....
Try these links...
http://www.archive.org/details/WatchTowerBibleandTractSocietyofPennsylvaniaWatchTowerpubs_0
http://www.a2z.org/wtarchive/archive.htm#magazines
http://www.watchtowerdocuments.com/downloads/
Here are three on Piratebay too....
http://thepiratebay.org/torrent/4215561/Watchtower_periodic_(Golden_Age__Consolation__Kingdom_News)
http://thepiratebay.org/torrent/4214005/Watchtower_Pubs_1870-1960
Chasson has a very nice collection online as well....
http://www.jehovahs-witness.net/watchtower/bible/128918/1/Consolation-on-Demand
~ huggles and happy reading!!!!