What I recall from my youth is just being told that there was a straight line that went right from Moses and all those guys in the Old Testament, through Jesus and the apostles and Paul and could somehow be traced, if someone knew the exact history, which someone surely did, to those proclaiming the truth, right through to the JWs and their 'calling', just like all those before them, now in these last days.
But yes, there was a 'ghost' history and a belief that we were just another part of a very long line of the 'right' people, the 'true' Christians. Everyone who ever came into any kind of contact with us had an opportunity to become part of that line, if they could just see 'the truth' and respond to Jehovah's voice, through us.
The actual history? No, no one knew much at all about it except that we had some vague familiarity with the names Russel and Rutherford and some of those old books. But we clearly NEVER believed that our religion began with them. Our religion was ALWAYS there; it is WE who are spoken about in the scriptures.
But I'm also sure everyone knew someone who knew someone who knew someone who had researched Jehovah's Witnesses thoroughly and completely and who, with Jehovah's blessing really knew EVERYTHING about the Organization.
So we wouldn't dare question that. After all, none of the people above us would, and weren't they more knowledgeable, more Godly, more everything than us?.