Fly Tying Thread Selection - Dernier, aught ie 8/0 polyester it all gets a little confusing. See Paul Proctor
Fly Tying Thread Sizes Explained - Troutlore Flytying Store
Guide-Curated Fly Selection – Mollyjogger
Beginner Fly Tying: It's easier than you think to decipher thread sizes - Fly Life Magazine
Steelhead Fly Tying Tips and Tricks by Sean Dahlquist – Flyfishing and Tying Journal
Gaudy Wet Flies of the Golden Era
Fly Tying Thread Sizes Explained - Troutlore Flytying Store
Stillwater Fly Tying Strategy - Fulling Mill Blog
3 Factors You Should Consider When Buying a Fly Tying Bobbin
Fly Tying Thread, Construction, & Materials - Fly Fisherman
7 threads that every fly tyer should own – and why ….
Fly Tying: Thread Control - Thread Selection for Streamer Fly Tying