Have to admit that his later books do seem to be more pretty pictures and less practical instruction.
I'm with a lot of other people on here who appear to think the same as me that if you get a Nesmuk, Graves and one other that escapes me poor 'ol addled braincell, you've basically got all the bushcraft books you'll ever need...
A lot of the more recent books, whoever the author, as pointed out several by several people, use the same diagrams and to my mind are just the old stuff re-hashed with a glossy cover and some updated kit.
There doesn't really seem to be anyone out there currently that has anything new to say or add to the 'classics'.
Well that IMO anyway...