Shadow Scale is already available for pre-order:
Seraphina is available now, at the following fine emporiums:
Powell’s Portland (You’re asking, “Is there any other?” Indeed, there is! Powell’s Chicago, where I used to work ages ago, and which carries used books, remainders, and overstock exclusively).
And of course, if you’re local here in Vancouver, KidsBooks is always the place to be!
UPDATE: I’ve had lots of inquiries about signed books. KidsBooks has them (and if they don’t, they can arrange to have them quickly because I’m not far away).
I will be touring to Philadelphia, Chicago, Seattle, San Francisco, and Los Angeles in September, and I will be in Calgary and possibly New York City in October. We’re looking for a way to get me to Portland, OR, and I will definitely get back to the town where I grew up, Lexington, KY, but I do not yet know when. More specifics and dates as I know them!