I'll admit I did not know what the title meant either until OP clarified. But it looks like Coles Notes was the ORIGINAL. Cliffsnotes came about after Cliff bought out Coles.

Last I knew they were now usually Spark Notes.

But does anyone care about the Thumpr cammed 440?

Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street