I started fly fishing in the mid 1960's and the standard fly was a simple bucktail - bucktails were sort of like the wooly bugger today. Generally two color critters like black and white, black and yellow, red and white plus the Mickey Finn. The Mickey Finn is still pretty deadly and not enough people fish it IMHO.
Wet flies were big too. For the early season the standard wets were colorful ones sizes 6 and 8. My mentor repeated over and over again 6's and 8s, 6s and 8s. As the season progressed and the water got lower and clearer the smaller, more natural guys came out like gold-ribbed hairs ear (often w/o hackle), gray hackle peacock, brown hackle peacock, lead wing coachman, etc. (all these still work well BTW). Everybody I looked up to had a row of cream and yellow wets because then as now sulphur season was the highlight of the fly season. In fact that's how I judged if a guy was the real deal or not - if it was late May to Early June and he didn't have some yellow wets I didn't think he was a regular fisherman. But I don't remember a super match-the-hatch mindest - just everyone figured out you use yellow patterns in late spring. Everyone had a favorite gaudy pattern or two just because. My favorite was the Silver Doctor. Recently I reread something by Bergman who thought the gaudy wets were probably really tiny streamers - sounds good to me.
Nobody I knew had much money and everybody hunted and trapped so muskrat was a pretty common dubbing and all sorts of mallard, wood duck, pheasant, and grouse feathers made it into flies. I don't remember people generally being as anal with wet fly patterns as they are now. Sort of follow the general idea and use what you had that looked right. These days I think you are drummed out of the wet fly corps if your flies don't exactly follow the plates in Bergman, TE Pritt, Edmond & Lee etc.
This spring I tied a small box of the old 6s and 8s for nostalgia's sake and did quite well with them. I don't think today's trout see those big wets any more and respond well.