Talk shows through the ages

[Roger Kirk]

 >Another issue is, how would they have done a delay in those days? I'm 
sure there are far
 >more sophisticated ways of accomplishing the delay on talk shows 
today, but how could
 >it have been done in the days before magnetic tape? And, if they could 
legally and technically
 >put a phone call over the air, would they have taken the risk that a 
member of the public
 >might say something which, by the stricter standards of those times, 
should not go over the air?

I seem to recall while I was working there in the early 70's, WRKO used 
to put call-in contest
winners on the air without benefit of delay.  I don't recall there ever 
being a problem.  Just Lucky?

Donna?