How to play the 5 String Banjo by Peter Seeger + Blue Grass Banjo music books
Some wear on the spine, nothing structural and both very useable.

The main star of the sale is the "How to play the 5 String Banjo by Peter Seeger", this is the 1962 3rd revision (according to the cover)...

It looks very comprehensive and when you're done with Mr Seeger's teachings you can make a start on THE Complete Bluegrass Banjo method (what could be better?).