Aaron at Edgewood is the source of the Salish Blue for EFN.
Edgewood Nursery He's sold out this year, but I'm sure he'll have more next year, so you may want to get on his mailing list.
The original source where I found them to share with Aaron no longer seems to sell them, so it may have been quite fortunate to get those into his caring hands. I originally found out about Salish Blue
right here on Permies! Thank you Nicole, small world, right?