The French Ina (Institut national de l'audiovisuel) just released a new CD with highlights from the radio show "Jazz aux Champs-Elysées".
This show lasted from 1954 to 1974, but all tracks here were recorded between 1954 and 1959. It was produced by a pianist called Jack Diéval and featured a house orchestra (the "JACE All Stars"!) with the finest French jazz musicians, as well as the German SDR Big Band led by Erwin Lehn. And, of course, plenty of prestigious foreign guests such as Lester Young, Stan Getz, Lucky Thompson, Donald Byrd, Blossom Dearie... who are all represented on this CD.
You can find the complete tracklisting and order it here (click on "plus de détails" for the tracklisting). It is also available at Amazon.fr, and even on iTunes (usefull to listen to excerpts).
Except for the Chet Baker & Caterina Valente track (which is very rare though), I think all the material is previously unissued.
More "Jazz aux Champs-Elysées" radio archives can be downloaded at Ina's website, with rare recordings by Eric Dolphy, Donald Byrd, Kenny Drew, Jean-Luc Ponty...