Dizzy Gillespie July 1, 1960
Label Name:Radio Broadcast (Voice of America tapes)
Venue Type:live performance
Venue Name:Newport Jazz Festival
Venue Location:Freebody Park, Newport, Rhode Island
Bruyninckx only lists the first three tracks, and does not give a specific date in July. -JS
From the Voice of America tapes, held by the US Library of Congress.
jazzdiscography.com (Michael Fitzgerald); Bruyninckx