Edited to start with a greeting! Glad you found us here and hope you stay around a bit even once your current issue is resolved
There is also a site called Missing Fabrics:
http://www.missingfabrics.com/
But they will need a picture too! You just never know, I've been able to connect many people with smaller pieces of wanted older fabrics. Other people seem intent on recreating a particular design in a magazine and want multiple yards of related fabrics. Sometimes that works, someone may have bought everything and never made it, but sometimes there comes a point where you say "it's a blue flower" and find a blue flower (or maybe something else) in a similar color/style and have to move on. If you do post there, please update the site if you get your fabric. You'd be amazed how many times I've had exactly what someone wanted/needed and I sent them a response within a week of posting and I never heard back and the ads were never taken down.
Posting pictures here can be hard for some set ups, we have some pretty good stuff stickied to the top of the Help forum
https://www.quiltingboard.com/qb-help-center-f27/