How the combination of two albums just sat on a shelf for 10 years is beyond me but that’s what indeed happened.
This was track one of five recorded on September 24, 1965 which featured Charles Tolliver on trumpet. Tracks 6-10 with Lee Morgan and a different bass player were recorded in April of 1966.
In 1975 they finally were released as one by Blue Note called Jacknife.
Appropriately named considering this is what the label had originally done with the work.
On The Nile
Written by Charles Tolliver.
Recorded in 1965.
Released off the 1975 album “Jacknife”.
Jackie McLean – alto saxophone
Charles Tolliver – trumpet
Larry Willis – piano
Larry Ridley – bass
Jack DeJohnette – drums
Longshot's Blog 
hey, great post, thank you ! For french readers, a book about McLean has been printed one month ago : http://lenkalente.bigcartel.com/product/guillaume-belhomme-jackie-mclean