I'll be looking forward to seeing more photos, Steve!
Wow, the cold tolerance of this species seems be quite something. I've done a bit of research with cold tolerance of Alaska plants. The plant I studied would get fair amount of cell damage from -17C exposure. Even air temp can go to -40C here, the plants under snow doesn't experience below -5 or -10C because of the insulation effect of snow.
Philip (a member here, his handle is king-of-orchid-growing) has done group order from Dr. Beyre, and he frequently import from him.
I'm still a terrestrial beginner, so I haven't tried Planthera yet. I'm still trying to learn Cyps, and started one species of Dactylorhiza.
Great Lakes Orchids has a few Planthera species, but they are a bit expensive for me.
Alaska winter is quite something, but it's not as bad as most people think. We have really mild winter this year (while lower 48 suffers). Global warming is great for us (just kidding).