Best Yellowstone/Montana Books in preparation for the July Clave.

Looking for a list of the better Montana/Yellowstone Flyfishing books. I
have one that turned out to be a good primer last time up (the Montana
Angling Guide - Fotherrill/Sterling) that is a wealth of information, but
looking for another book or two to supplement it. Basically looking for
something with detailed information on the streams, holes, and especially
the hatches. I'm finding it hard to get good information on the local
hatches so good accurate hatch charts with local pattern information would
be nice. They don't seem to pay much attention to the hatches in
Yellowstone/Montana, and maybe that's why, but witnessed a good variety of
hatches last time out and would like to be prepared this time around.

Any and all information would be awesome!!

Mike