Great shops in Brea, CA -- Upland, CA -- and the Fabric Patch which is right near the one in Upland and the city starts with an "M" but can't remmeber. Great shop in Chico.
My suggestion is to go on line and "google" the towns you'll be by and go from there but I'd give each of them a call before to make sure they're still there and at the same address.
The Quilter's Travel Companion is a great book to have if you travel much.