I`ve recently asked for this issue vie the LF thread.......
Here we have the additional 5 tracks listed :
http://www.discogs.com/Al-Haig-Trio-Invitation/release/1712336
A helpfull boardmember linked me to the Amazon.jp site, where one copy is on offer (for 220 USD + postage !!!) - as the info is written in japanese, not sure about the cd`s condition (could be "very good"), but (again in japanese) contentwise 13 tracks are listed......
As mentioned i would LOVE to hear these tracks (in whichever form...), but the forementioned offer on Amazon.jp was conditionwise too risky to me...
Hopefully another boardmemner can spread a little bit light (or more...) on that....