By Martin Buck (Published by Pathfinder/Peter Watts Publishing) 
Published in 1988 this photo book covers the work of the class 45s and 46s through the 1960s to the 1980s. A good mix of photographs illustrate passenger and freight workings as well as the different liveries and external modifications made to the class through their life of service.  
Illustrated with a mix of monochrome and colour photographs.
These books are new but old stock and may have minor imperfections due to their long period in storage.