Here's the thread with the info on the Question Box. Quite fascinating.
http://www.jehovahs-witness.com/6/139148/1.ashx
A few other thoughts on 1975:
I remember a brother stating that if January 1976 came around, he was gone. That pretty much happened.
A CO in our circuit called on this home and the guy's number plate was JAH. His name was Jim A. Hogan, and he was a state police officer. Using 1975 and the guy's number plate, the CO started a study with him, and this guy was all gungho.
He studied, got baptized, quit his job, sold off stuff so he could Pioneer. Well, when 1975 came and went, Jim left as well.
S4