Here are two public timetables for the Toronto, Hamilton & Buffalo Railway, from 1968 and 1973. The TH&B was a railway running between Waterford, ON and Welland, ON (the International Railway Bridge near Niagara Falls), with a branch to Port Maitland.
October 27, 1968
This small timetable, effective October 27, 1968, proudly proclaims that the Toronto, Hamilton & Buffalo Railway “is equipped with Centralized Traffic Control and Automatic Block Signals”. I think it was the first Canadian railway to be completely equipped with CTC – a little easier for the TH&B, given its size.
It is notable that this timetable has the subtitle “Connecting the Penn Central and the Canadian Pacific Railway“. The April 1965 timetable referred to “the New York Central system”.
The April 26, 1970 timetable is essentially unchanged.
April 29, 1973
The April 29, 1973 timetable has a significant change in the services offered. Two of the four routes were dropped – Toronto-Hamilton-Springfield-Boston and Toronto-Hamilton-Cleveland.
Keep in mind that Amtrak began operations on May 1, 1971. It’s likely these services were dropped in earlier timetables because of the changes south of the border.
I have timetables after this one, up to October 26, 1975, but they are essentially identical.
The TH&B maintained passenger service until 1981.