The message from "Martin Livingstone" contains these words:
Plans, line drawings, differences within the class, testing (1948 exchanges, etc.), drivers comments, and about 30 pages of photos of 8Fs in action.
As far as NW photos are concerned, the usual classics are there, but I'd only give it 7 out of 10 from that point of view. It rates a good 9 from a loco-modellers point of view, but if you want the NW scene you need books by Eric Treacy, Colin Gifford, Derek Huntriss, Derek Cross, etc. I've found Colin Gifford's books - Decline of Steam, Each a Glimpse, and Gone Forever - very useful for railway details. There's one shot which shows a bin wagon driving down an entry while an 8F starts a long coal train in the middle distance...but then I work in N so those details are more important (to me) than the number of rivets on a King's front bogie.