It's been a long, long time ago, but I remember as a youngster attending the meetings and there was a huge bulletin board next to the platform and every month they would post the field service statistics on it, i.e. hours, return visits (back calls), mags, books, etc.
I was wondering if this was common practice in all Kingdom Halls back in the 50's and 60's and if so, when did the practice end? Given Nathan Knorr's interest in marketing the JW teachings and putting a guilt trip on those who didn't perform up to snuff this recollection makes sense. It reminds me in retrospect of sales meetings and monthly sales reports.