It is identified as Section PB.
Vintage British Railways Working Timetable Supplement No. 4 1979 Train
Vintage British Railways Working Timetable Supplement No. 2 1978-1979
Vintage British Railways Working Timetable Supplement Western Region 1978
Vintage British Railways Working Timetable 1977-1978 Western Region
Vintage British Railways Working Timetable Supplement No 5 1977-1978 PD
Vintage British Railways Working Timetable Supplement 1979-1980 BR 31457/4
