The 1960 to 1980 era will probably be considered the Golden Age of waking fly development in the Pacific Northwest. One of the early pioneers is Harry Lemire of Black Diamond, Washington. He is credited with the development of a fly he named the Grease Liner. Many Pacific Northwest and British Columbia steelhead have been taken with it. It was tied with a black dubbed body, sparse grizzly hackle, and chestnut colored deer hair wing and tail. Other tyers copied Harry's fly and added their own variations and modifications.
The first significant modification I remember reading about was in an article by Mike Deeker where he discussed his "Bubble Head" series, which were modified Grease Liners. He cemented the wing butts into an upward facing scoop that would naturally plow water and make his flies wake without being riffle hitched.
In 1982 a guy gave me a beautiful piece of dried, un-tanned moose hide. The hair was black with gray butts, about 2" long, and very stiff and tapered. It was perfect Grease Liner wing/tail material. Our black version evolved on the Salmon River, a small clear Sandy River tributary near our store. It was one of the early spring go-to flies in the 1980's. It is tied with very stiff moose body hair for the wing and tail. The forward sloping wing butts have been cemented and shaped into a scoop that will plow water and help rise the fly to the surface. The black Grease Liner is a good choice when encountering fresh rested steelhead in clear water over 47 degrees. It is a proven at-dark fly and also a good choice for rivers that are in glacial run-off.