Guild Wars 2

Has anyone managed to actually find where you can get these recipes? I’ve bounced around checking the different faction vendors but I haven’t seen a single Trailblazer anything, save for rare weapons. I’ve played through the story and got a single piece of Trailblazer as a reward, but unsure how to proceed as I’d like to make a few pieces of armor if possible.

I’ve found a couple recipes from the crystallized supply caches in tangled depths. I’m not sure if they’re on other maps, but I at least know you can get them there.