The oldest version seems to be the 1993 version, which came out in 1994 (link). My family never got a computer until '98/'99, and I don't think we kept those old CDs. As far as I can tell, there is no ISO available online of the old CDs, so you'll have to get it from a JW who still has the CD.
Watchtower Library CDROM That Goes Back The Furthest?
by lambsbottom 10 Replies latest watchtower bible