BA services in past years

I’ve managed to get hold of some BA timetables from the late 70’s and early 80’s. The Tristar was one of my favourite a/c then and BA operated a large fleet of them back in 1981 to:
European routes:
Athens/Copenhagen/Faro/Larnaca/Malta/Milan/Nice/Palma/Paris
Rest of the World:
Boston/Cairo/Calcutta/Delhi/Dhaka/Dar Es Salaam/Doha/Dubai/Jeddah/Karachi/
Kilimanjaro/Kingston/Kuwait/Mexico City/Nassau/New Orleans/New York/Panama City/Rawalpindi/Tel Aviv

Many L-H services operated to 2/3 cities by the same a/c. The most interesting routing being:

Heathrow-Bermuda-Nassau-Kingston-Panama City

Imagine the time taken to get to Panama?