QUIZ: How much do you know about Robert Johnson?

What book is the closest to a complete bio of Johnson?

https://en.wikipedia.org/wiki/Robert_Johnson#/media/File:ClarksdaleMS_Crossroads.jpg Click to Flip
https://www.amazon.com/Searching-Robert-Johnson-Legend-Singers/dp/0452279496
Peter Guralnick's "Searching for Robert Johnson" 1988

{"code":"internal_server_error","message":"

There has been a critical error on your website.<\/p>

Learn more about debugging in WordPress.<\/a><\/p>","data":{"status":500},"additional_errors":[]}