Try e-bay. I've actually found odds and ends of discontinued fabrics and patterns there.

hi try some of these

[email protected], they helped me find several fabrics to finish a quilt. You just email any information you have on the fabric and it goes to about 750 quilt shops across the US and then they reply to you by email

also try

missing fabrics.com

lost fabrics.com

note: the info I just added came from my LQS