Back in the 1990s and the first half of the 2000s, what timetable leaflets were produced in the area?

Was it the responsibility of the operators, or did Nexus used to provide leaflets for more than just secured services (as was the norm in West Yorkshire, South Yorkshire, Greater Manchester etc)?

And regardless of whether it was the operators or the PTE who did timetables, were they seperate ones for individual services like recently, or was there area guides/booklets etc?