The books (and demimateria) should be available from any scrip vendor as long as you have yellow scrips unlocked. There is an option to buy Master Recipes from their list when you talk to them. And Snowsoak springs has nothing at all to do with demimateria, scrips or anything related to crafting. Anna is in a stall by the New Nest aetheryte in the Firmament, which might need you to unlock collectibles with Ehll Tou, but nothing else.