Here're a few rippin' instrumentals with Earl & Lester, all recorded, I think, on the Martha White show in the early '60s:
"Cumberland Gap":
"Ground Speed":
"Fireball Mail":
One more: "Earl Scruggs Breakdown". Is he using the tuning peg here to "bend" the note instead of bending the string--or is he re-tuning while playing? I've never seen anyone use the tuning peg to bend a note, although I have seen Junior Brown tune down the low E so he could hit lower notes (and then tune it back up to E to keep playing with standard fingering):
And here's a longer documentary from '72 with performances by Dylan, Baez, Bryds, etc. Amazing to think that it was called "The Complete Earl Scruggs Story" though recorded 39 year ago: