This appears to be a partial repackaging of two other releases, namely Jazz of Two Cities, and With Warne Marsh.

Tracks 1-9 coincide with tracks 1-9 on disk 2 of Two Cities, tracks 10-16 coincide with tracks on With Warne. Note that With Warne includes two alternate takes that are not present on this disk - as I do not own this actual disk, I cannot listen and determine which of these two tracks were used on Free Wheeling.

Note also that this disk is called "the complete sessions", yet there's two alternate takes on the other disk - meaning that it's really not all that complete.