Maro Ajemian has been associated with countless "first recordings" of 20th century works. In addition to Ernest Bloch, she was also closely associated with Alan Hovhaness and recording world premiers of his and many other contemporary composers.
It is highly doubtful this album will ever see the light of reissue, it was recorded for MGM Records in the mid-1950's. Where those masters are is anyone's guess, but they are rumored to be in a vault somewhere in New Jersey. Maybe some day someone will be interested.
But in the meantime, here is Enfantiles by Ernest Block, played by Maro Ajemiam.