Schweber's book is a non-partisan (both Jimmy Carter and Dick Cheney share stories) look at special places and experiences fly fishing in Yellowstone National Park. It brings Yellowstone's fly fishing community together as if they were swapping stories over cocktails at Yellowstone Lodge on the first Monday in November. And as such, you'll probably catch wind of valuable information.
The author put in his leg-work. Fifty chapters resulting from finding the right people and interviewing them, and hiking about 300 miles to try to fish all of the included locations.
Tips on how to catch lakers, the reason westslope cutthroats are native to part of the east side of the continental divide, the real story of "Yellowstoner", and more stories and tips are sprinkled throughout, with a special emphasis on Yellowstone cutthroat conservation.
If you want a thorough where-to guide to fly fishing in Yellowstone, buy Ken Retallic's Flyfisher's Guide to Yellowstone. If you are interested in unique perspectives and intriguing stories on several fisheries along with good information, buy a second copy of Retallic's book and I'll lend you my copy of Schweber's (I work for a competing publisher) :).