An excellent source of bareroot roses. They use multiflora as root stock and their roses just thrive!
Here is a link that might be useful: Pickering Nurseries
Some varieties sent out in past years not what they were supposed to be. Don't know current situation.
I ordered 3 David Austin roses last year that I couldn't find anywhere in the U.S., and they were very reasonable...much more so than in the David Austin catalog! Even though they ship from Canada, I found the shipping rate not to be too terribly expensive, expensive since the roses are often around $11.00 each. They have a huge selection, too!