Doug,
I remember those very well.
In fact, I had only been married a few weeks in 1977 when my wife got hold of one of those "Questions" sheets. That then proceeded to cause the very first crisis in our marriage!
We never did learn who wrote them, though. The last ever heard about this matter was from a Circuit Overseer, who assured us that "The Society was carrying out an investigation as to who had wriiten those 'questions'."
Bill