LadyAg

I am trying to locate solid white background fabric for an 1850-1860 reproduction red and green applique quilt I am planning. I would like a fairly thick fabric that will hold the large size applique shapes well, is not blindingly white, and not a broadcloth texture. I know little about the whites of that era, but it doesn't seem like the fabrics then were likely to be as 100% pure white as the modern fabrics are.

Does anyone have any suggestions as to who makes good background fabrics?

Thanks so much for any and all help!