Well I am really a Supersax fan and have most of their issued material. Thanks also for your explanations which helps a bit to see the matter more clear. Its correct that the mentioned " KOKO" album is the Capitol " Supersax Plays Bird". The other one mentioned by you "Salt Peanuts" is also here plus the one " Supersax plays Bird With Strings".
So here they are together with another 3 recordings - Missed the fist vinyl volume with L.A. voices. However got it later together with the Columbia reissue CD-box. They had also a DOWN BEAT feature with an own frontcover picture.