As Membership Secretary for the GNRS I'll reply with a little more info.
Many thanks for the recommendation, much appreciated.
Tony - It was Malcolms express wishes that the publication did not include photographs and the society respected that even though the book was published shortly after his death. There are drawings within by member Paul Craig for many of the tender types and it is planned to publish more information with photographs as it is assembled. Steve White our publications officer is working on this at present. The book itself has just been reprinted by the society with an updated forward as well as colour cover. It is offered in 2 forms, either a spiral binding (to be able to lay flat) or perfect bound.
Certainly does, but more information is coming to light, just takes time.
There was also the thought that if there is some information published then more could be added and it might reveal further research by individuals.
If anyone is interested in the Great Northern Railway society or our publications, there is a link to the societies website in my signature (at the bottom) and after that unashamed plug for the GNRS courtesy of Tony's thread............it's back to modelling.