Charlie Parker June 1951
Sutherland has this session listed as having occured somewhere in between: "June 25 - July 1, 1951." While this still doesn't give us an exact date, it helps to narrow it down.
Losin lists the tenor saxophonist as "unknown" but Sutherland lists him as Wardell Gray, so that is what was adopted here.
Losin lists the vocal as unknown, but Sutherland notes that the vocal is "Sarah Vaughan" (and that she only sings on Track 3), so that is what was adopted here.