Trying to move the discussion on pre 1986 X10 Newcastle to Middlesbrough to Bygone Era

Can you remember the old timetable books that were produced to purchase prior to 1986. If you bought the whole North East version with all operators it used to be between 300 and 500 pages thick.

I wonder how many pages this book would be if produced today, due to most services being amalgamated into just two or three (i.e. 24,25,26,27,28,709,721, 722, 723, 724, 725, 726, 727, 728, 733) all being merged into just 21,22, 28,28B