Man, what a bunch of old farts! Of course, I turned 13 late in 1970, so I guess I'm one of 'em...
Unfortunately, I didn't catch the jazz bug until much later in life, so I have no memory of listening to jazz in the seventies other than my cousin's Mahavishnu Orchestra lps, but as far as looking back goes, the two names that stand out for me are Sonny Stitt and Sonny Criss. Seems like they should have been past it by then, but I think they were doing their best stuff in the seventies.