Go to Trip Advisor website. Look up the cities (larger ones) that you are traveling through. There are hotel, restaurants, tourist things to do listed on the site. While these are "reviewed", it is not a complete list of local options (no quilt shops are listed) at least it gives you a start. I use Trip Advisor all of the time! Very helpful..
The Quilters Travel Companion website lists the shops that subscrbe to their listings.
The Rowby Row website would be a great resource for current shops that are participating. 2500+ shops have signed up in 2015!
Download the Quilt Shop app. You will want to make a phone call to shops before assuming that they are still in operation. I see shops that closed 4-5 years ago listed. It is up to shops yo update their listings/delete, etc but many do not.
travel safe
sandy