Many of those were listed in my book, just didn't pull out the atlas to see where they were in relation to other cities.
I figured there were shops in Boston all over. They'd be crazy not to. Yet, this book doesn't have any listings.
I do the same, check online and with this book, when I travel to check out shops along the way.
I'm sure you'll find enough at least to do a mini-shop hop while you're away. Post pictures of what you find too.