Map o Awst 1974 yn dangos gwasanaethau fysiau yn ardal y cymoedd i’r gogledd o Gaerdydd hyd ar Aberhonddu, Gwent, Henffordd, Caerloyw a Bryste.
Y gwasanaethwyr yw:
- Red & White Services Limited
- Western Welsh Omnibus Co. Limited
- Bristol Omnibus Co. Ltd
- F. C. Cottrell Ltd.
- City of Cardiff Transport
- Jones Omnibus Services Ltd.
- Midland Red.
- Rhymney Valley U.D.C.
- Wye Valley Motors Ltd.
ROUTE MAP
Eastern Area of Red & White Services Limited and Western Welsh Omnibus Co. Limited
Incorporating the areas of Gwent – Powys
South Hereford & West Gloucestershire