British Railways Driver's Manual - High Speed Diesel Train (HST) - Drivers Static Duties Incl, Preparation, Disposal, Immobilisation, Taking Over & Changing Ends.
Issue Date: Unknown   -   BR 33056/35 - Provisional Edition.


More information can be found here Wikipedia - British Rail  -  Wikipedia - HST  -  Testing the HST Prototype  -  Wikipedia - IC 125  -  125 Group