Yes, that is a great book. Though it is a bit dated, I have it and use it.
Some other great (and newer) mycology books include:
“Mushrooms Demystified” by Dave Arora is a great book for NW mushroomers.
A great one for the truck/pack is “All that the rain promises, and more” by Dave Arora.
If you are into Medicinals, “MycoMedicinals” by Paul Stamets.