Sinatra question

According to the liner notes from this three disc vinyl collection I'm holding Sinatra parted ways with Harry James in late 39 and did some sessions with Tommy Dorsey. These sessions were recorded from Feb. 1940 to July 1942 and are called the The Tommy Dorsey/Frank Sinatra Sessions. I don't know if it is available on CD or the sound quality because my set is still sealed. It does say they used the Original masters for the set but on some hard to track down songs they just used copies of 78's from collectors. Hope this helps you out.
Ciao

Some changes here,Sinatra parted with Harry James in late January 1940 and this set is 3 double albums for a total of 6 disc's.

Sessions,recordings or whatever these three double albums were everything that they recorded together for RCA. Everything you are saying about Dorsey/Sinatra is in the liner notes and it was just released on Cd. Frank replaced Jack Leonard at 100.00 a week and he was not acknowledged as the lead vocalist but just as "with vocal refrain." The "sessions" were recorded in New York, Chicago and Hollywood and number 35 in all. By the end of the three year gig Frank had earned his own by line on recordings and promotional advertising.