I just came across this. It seems to be streaming/download only. I'm not aware of it ever having been available on physical medium, but would be interested to know if it was.
20th Century Music for Saxophone and Piano with Maria Bergmann, piano
Tcherepnin, Sonatine Sportive
Pascal, Saxophone Sonatina
Trebinsky, Saxophone Sonatina
Martelli, 3 Esquisses
Creston, Saxophone Sonata
[Edit] The release label, SWR Music, is a project of Southwest German Radio, of which Maria Bergmann was the house pianist. Her Wikipedia entry says she retired in 1982, so that may help to date this recording. I assume this was a recording of a radio broadcast performance.