If you haven't already done so, you can also post an ad/request on these sites.
www.missingfabrics.com
www.fabrics.net
www.ladybuttonfabrics.com
www.rjrfabrics.com has a fabric finder section under fabrics - but it's supposed to be for rjr fabrics - but I've seen requests for other lines there, too
The first site is my favorite, the second is also quite good.