Hi Tweeters:
I just picked up a copy of Dennis Paulson's latest field guide:

Alden, Peter and Paulson, Dennis. 1998. National Audubon Society
Field Guide to the Pacific Northwest. Knopf 448 pp. Price at $19.95.
ISBN: 0-679-44679-6.

It covers the natural history of Washington State and Oregon and includes
the following topics:
Natural Highlights
Topography and Geology
Habitats
Conservation and Ecology
Weather
Night Sky
FLORA:
Mushrooms
Algae
Lichens
Spore Plants(Liverworts, Mosses, Clubmosses, Rush, Horsetails)
Ferns
Trees and Shrubs
Wildflowers
FAUNA:
Marine Invertebrates
Freshwater Invertebrates
Land Invertebrates (including Spiders and Insects (And Dragonflies of
course)).
Fishes
Amphibians
Reptiles
Birds
Mammals

and this book includes a section on parks and preserves to visit in WA and
OR.
I would recommend this book as a general introduction to the natural
history of WA and OR.
Ian Paulsen
Bainbridge Is., WA