British Rail Train-Crew Manual - Class 47/7 477xx Diesel Electric Locomotives -  A guide for drivers.
Regional Operations Training Centre - Southern Region - Waterloo - Issue Date February 1981 

More information can be found here Wikipedia - British Rail Class 47  -  The Class 47s Website
More Information Regarding Preserved Class 47 Locomotives can be found on the following websites:  Preserved-Diesels