What is the meaning of the lyrics to the Grateful Dead song Uncle John's Band written by Robert Hunter?

This is a tribute to a string-band called The New Lost City Ramblers, headed by John Cohen, which also included Mike Seeger and Tom Paley. The lyrics refer to several songs by that band such as "The Story The Crow Told Me", "Buckdancer's Choice", "Easy Street" and "Beggers Tune". They influenced many folk artists of the sixties, including the Grateful Dead.