Try this link: https://www.rollingrivernursery.com/products/1103/33/fruit-trees/peaches-prunis-persica/siberian-c-peach-detail

Apparently not so much of a good peach...I asked my Buddy Bernie if he heard about..

Sure I do. I got lots of seeds from BC a few years back and planted
them at Evans and at my orchard. Lots came up. They die to the
snowline every year, even in an el nino year. They are terrible to eat
peaches I have read, and only good for a rootstock. Evans may have 2 or
3 left, but they die out after a few years of dying to the snowline.