Just got through reading the Muddy Waters Story, Can't be Satisfied. Great book! It devotes a chapter to a Lomax recording trip to Mississippi arounf 1940. Muddy thought Lomax was a revenue officer trying to bust him for selling moonshine on the side.

Althought it's a bit critical of Lomax omitting some of the details of the trip, without that trip it's possible we would not have had Muddy Waters. It encouraged Muddy to follow his music and move to Chicago.

-Richie