The following item is listed on eBay (item number 130490793211) titled
"World's only recording of historic jazz concert". The item consists of 8 7-inch tapes.
The jazz concert was held on Sunday, June 23, 1963, where 40 of the country's top jazz musicians gathered in the back yard of baseball legend Jackie Robinson's home on Cascade Road in North Stamford, CT, for what became the first annual Jackie Robinson Jazz Concert.
Artists include Zoot Sims, Dizzy Gillespie, Dave Brubeck, Billy Taylor, Randy Weston and many more.
These tapes could become a Mosaic or Mosaic Select set.