The Bentley folks are right down the street from where I work (Cambridge MA),
and I've been over there several times both for business and also for  books
(in addition to the Vanagon manual, I got both the CD and the paper manual for
our 96 Passat, plus lots of other Bentley books.)   Cool offices and very nice
people, who seem to really like what they're doing.   Offices are in a
converted
old Cambridge house, with a fancy (and well-equipped) garage attached where
they
disassemble/analyze/photograph/reassemble/etc. the cars  that they're
writing manuals on.

There are a number of VW enthusiasts there, and they're all car nuts of
some sort.
I met the guy who has the vanagons, I think, but I forget his name.

BTW - The Passat CD manual I got was very well done, but I found it to be
very hard to use
when working on the car, since I had to bring my laptop down to the garage
to view it,
and then there was the issue of grease and dirt on the keypad.   I'll take
the paper one
any day (even though for the Passat, the paper one was lots more
expensive.)  Maybe the
vanagon CD would be a good addition to a paper one, (but the ETKA CD has
all the
part numbers too).

Dave
90 Westy
87 Golf
87 Golf GTI 16V (son's car)
96 Passat