Can I point you to a great article about the "Ramblers Step" missing from Greil Marcus's Invisible Republic?
Dylan did not learn Harry Smith's lessons directly from the Smith Anthology. He got them mostly second-hand — that is, he learned them, but mostly in translation. I'm now convinced that the single most important vehicle delivering Harry Smith's peculiar message to Dylan in those early days — the widest pipeline between Harry and Bob — was The New Lost City Ramblers.
The whole article can be found here.
•The New Lost City Ramblers
•More from the Monochord: Beyond the Anthology