Manuel Ponce playing

[Rob H]

While searching for other information I read that Manuel Ponce was recorded playing his gorgeous Piano Concerto with the Orquesta Sinfónica de México under Carlos Chávez, presumably a radio broadcast as it says Radio Mill 1942 next to the entry (this is on wikipedia's Manuel ponce entry).

Does anyone know is this has ever been released as a historical recording or is available to listen to anywhere?