There is an online Old CATV Museum

http://theoldcatvequipmentmuseum.org/

This link shows older cable lineups and TV Guides from the past century.

https://vintagetvguide.ca/cable-channel-guides.php

I still remember the old descramblers from before digital cable. The Zenith ones were used most of the time in Ontario. Many of the converter boxes were Jerrold.