I think the person seeking this book information just needs to make a trip
to Flora & Fauna Books! These are just a few titles at my desk.

An excellent book on Oregon mammals came out from OSU a couple of years ago;
I forget the author & title. Lots of info on natural history.
Mammals of the Pacific States, Ingles
Mammals of BC, Cowan & Guiget

Plants of the PNW Coast, Pojar & Mackinnon
Wetland Plants of Western WA and NW OR, Cooke
The New Savory Wild Mushroom, Joe Ammirati
Eugene Kozloff:
Plants and Animals of the PNW
Seashore Life of the N Pacific Coast

Pacific Fishes of Canada, Hart
Shells and Shellfish of the PNW, Harbo
Marine Birds & Mammals of Puget Sound, Angell & Balcomb
Seashells of the PNW, White

Lambert:
Sea Cucumbers of BC,SE AK, & Puget Sound
Sea Stars" " "
Pacific Coast Crabs & Shrimps, Greg Jensen

I think Seattle Audubon published some good volumes on Amphibians and
Reptiles; Kelly McAllister and Bill Leonard were among the authors.

A Naturalist's Guide to Canyon Country
by David Williams

Kevin Li
kdli at msn.com
Ballard, USA