What are the best web sites for finding wide quilt backing fabric? I have a Civil War quilt to complete but need backing fabric. Any suggestions welcome!

www.marshalldrygoods.com

I find the best buys there.

fabrics.com has some wide offerings...

fabricdepot.com

I have a Civil War quilt that I am doing, and I found a bed sheet at the Goodwill store that is just like new (could be new) that I am using for backing on my quilt. I have used a lot of sheets for backing on my quilts. My mom used them also for many years.

Many Civil War era quilts had plain muslin backing.

Wide backs can be purchased from Hancock's of Paducah or
www.thousandsofbolts.com

Thank you all for your suggestions. They were all excellent. I looked at lots of backing fabrics and chose one from Fabric.com. It is a repro from Judi Rothermel (designer of lots of Civil War fabrics) and I think it is a perfect solution. It is tan background with small red/blue outlined flowers sort of swaying in the wind. The focus fabric on the top is a bluish red with light blue flowers accented with tan. I think it's going to look great!