thanks for the reminder Christopher.... yes the record in question was or is being held by the University of Oklahoma libraries and score in addition.... however, when I inquired about the recording, it was in a sealed box that was part of a gift to the University. However, when the box was opened, the record was not playable because it was in several pieces (shallac record). However, I did make a photocopy of the score, when I was in Oklahoma City at the University.
Wish I had good news on that....
here is the link to the library
https://ou-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=NORMANLAW_ALMA21371073280002042&vid=OUNEW&context=L&lang=en_US