Wife and I were in the Snoqualmie Falls gift shop the other day and I saw this book. Flipped through it and it looked very cool. He rates the trails and describe each one as well as give a basic map/directions.
Lived in Wa St my whole life and haven't heard of many of these trails.
I don't like to beat the piss out of my truck as it is also my daily driver, these types of scenic drives are right up my alley. You can read a preview at Amazon. It sounds like the majority of the drives are gravel with many having a high "pucker" factor as he calls it. Sounds like fun!