You can always use the fabric search engines to find lines or manufacturers (or colors or styles for that matter). I got a total of 138 results for Blue Hill Toybox, though a few shops are duplicated on more than one site.
http://www.quiltshops.com/index.html
http://webstore.quiltropolis.net/
http://www.fabshophop.com/fabsearch.asp
The first one had 51 fabrics at 6 shops, the second one had 70 fabrics.