Hello,
It's titled 'Stroudley and his 'Terriers' by Tom Middlemass, published 20th October 1995, there's two ISBN numbers: ISBN-10 1899816003 and: ISBN-13 978-1899816002.
I bought it as part of my research on the Terriers as I managed to acquire an 'O' gauge one, although I generally model in 'OO' or 'EM' !
There were so many modifications to them throughout their lives so I'm trying to decide which prototype to model! No two Terriers were the same it seems!
Regards,
Jim.
I hasten to add it's not a biography in the true sense of the word really, but there's a few pages dedicated to his career path etc.