What a great thread! Pretty sad some of the links are no longer good. I've been listening to a lot of the songs in this thread with my Dad recently, most recently quite a bit of Ten Years After.
He still has many of the records he purchased from when they first came out, across a pretty good range of rock, blues, and folk. Still sound incredible for being nearly 40-50 years old, playing on a Technics turntable from ~ 1980.