British Rail Train-Crew Manual - Class 56 - Drivers
Static Duties.
Issue Date May 1983 - BR 33056/56 Issue 4 Supersedes
Issue 3.
More information can be found here
Wikipedia - British Rail Class 56
More Information Regarding Preserved Class 56 Locomotives can be
found on the following websites:
Preserved - Diesels - Class 56 -
The Class 56 Group