I can vouch for TMS's feel of the congregations in the mid-late 70's.
Here in the UK one of the elders in my hall who is in his 70's now actually gave a circuit assembly talk as a young up an coming elder sporting a beard. Unfortunately he is still deep, deep in but has no beard largely I suspect because he likes his "high profile" and assembly items.
It was great - we late teenagers wore loud check sports jackets, wide ties, wide-collared, coloured shirts, flared trousers, big clumpy shoes and hair over our ears! And there was that article about women wearing "pant-suits" too. Though no-one did.
And of course the "generation that saw 1914" doctrine ruled as king.