Simon & Garfunkel - You Don't Know Where Your Interest Lies

2007 saw the six disc expanded version of "The Collection: Simon & Garfunkel" - a complete reissue of all studio LP's including some rare bonus material that hasn't been released on streaming.
This bonus track was featured in the 2001 CD reissue of Bookends. - Simon and Garfunkel's fourth album. This track in particular was recorded June 14, 1967.