Could someone, anyone, please tell me anything at all about this alba?

It was being grown by a Mrs. Cheryl Netter, whose website has not been updated for about 10 years. There were some pictures of GYA on her site. It seems to grow to huge size.

Might it possibly be the same rose which High Country Roses is selling as "High Country Banshee"? I know of no pictures of stems, buds and so on online for either variety. The flowers do look similar, as best as I can remember what I saw on the Netter site.

http://www.highcountryroses.com/old-garden-roses/alba-roses/banshee-high-country

The current owners of HCR operate an excellent nursery but don't seem to know much abut the provenance of their stock.