I got involved with with the Witnesses in 1971. Some of the local Kingdom Halls would place a small notice in the paper about the upcoming Sunday talk- Bro. so&so from Chicago will give the lecture on "how to recognize the true religion", etc. A general invite to all was given and a phone number to call for info and a "FREE Bible study!" They placed bigger adv for the visit of the circuit overseers. Funny, after 1975, I don't remember this being done any more.
Does anyone remember their KH doing this?