https://www.youtube.com/watch?v=9WF951J5l4k
Can anyone find any more details?
http://michaelsmusicservice.com/blog/wp-content/uploads/2016/05/Ravel-Auditorium-Organ-History-and-Stoplist.OO_.pdf
http://www.classicalsource.com/db_control/db_concert_review.php?id=11565
Regards
Ian