It has been reported in recent years that Alice and Ravi Coltrane have in their possession master tapes and/or copies of many of the Coltrane Impulse era recordings previously listed in discographies as "lost." Some of this material has come out but she has gone on record (I believe) as saying that she intends to stagger its release and so we can't count on seeing much of it any time soon. One part of this archive that has always fascinating me is the studio recordings from 1966. Although I