I've used it for lining curtains but that's it. Not sure about quilting.

Also, after ironing, then needle it to see how easy.

This is drapery lining. I would try the things already suggested and see how it reacts. It may be the perfect backing for your next quilt.

it's drapery lining, Roc-Lon is usually quite good stuff but since quality everywhere seems to be dropping on everything I would still test it. My mother swears by one of their muslins for her backings, she prefers a plain white backing on her quilts.

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Ask a question and you will get many answers.

The "Rain No Stain" part of the label sounds like it might have a Scotchguard-like coating on it. Maybe it was intended for drapery lining or under upholstery fabric to protect the cushions?

Thank you everyone for the comments, suggestions, and also the kind welcome. As suggested, I washed and dried a 1-yard cut (hot water, hot dryer) to check shrinking and wrinkling. It shrunk about 1/2 inch over the 36", which I thought was OK, and the wrinkling was not bad at all. The only concern I have now is that the fabric, now that it has been washed, seems a bit lighter weight than my typical quilting fabrics. So, I think I won't use it for piecing, but for backing. Thanks again for all the suggestions!

I got some of the same fabric at an estate sale, although not as wide, it had the same "label" and I've used it for blocks and not had any problems.