"Fishing the Oregon Country" can't remember the author, but the book was from the 50s or 60s.

"Fish On!" by Enos Bradner. He had another old book detailing Washington State places to fish I can't remember the name.

"Steelhead Drift Fishing" by Bill Luch(?)

"Sea Run" by Les Johnson

"Trout Fisherman's Digest" Which came out in the 70's, many articles including one about catching trout, not specifically steelhead, on bobber/jig way before it became popular.
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