Ian's standard book on the whole Lee Enfield family of rifles appeared as 'The Britishicon Service Lee' IIRC in the early 1980's, or thereabouts. As he collated more information the book enlarged & morphed into 'The Lee Enfield Story'. I think there have been two editions of that, again, the latter expanded, with additional info, over the former. So, if you want the most comprehensive coverage of them all I would suggest looking out for the most recent edition of the LES.