John Coltrane April 1, 1960
This April 1, 1960 session is not included in the book source.
Both The John Coltrane Reference book and Lord include these three tracks as part of the March 28, 1960 studio session that also took place in Dusseldorf, Germany. However, Lord also includes them as having taken place as part of a live concert performance on April 1, 1960. He notes that the concert was entitled "Rheinhalle" and was also in Dusseldorf, Germany. In this live performance, only these three tracks were played by the quartet. Whereas, in the March 28, 1960 session, these three tracks were played along with many others - and the quartet was also joined by additional personnel. The label recording companies of both sessions are different.