When I'm looking for a specific fabric, the first online site I search is :
http://www.quiltshops.com/search.htm
This one was found through quiltshops.com -
http://www.rossvillequilts.com/cgi-b...a_c8960_black_
Etsy also had several listed -
http://www.etsy.com/search?q=asl%20f...o=US&ref=auto1