Where would I find online recordings (preferable), or where could I
order physical copies, of audio tapes recorded during Joseph
Kittingers historic jump from Excelsior III.  Kittinger was the first
man to jump from a balloon gondola at ~103,000 feet in this project,
following his work in Project Manhigh.  During his descent, a tape
recorder was recording his voice, heart, and respiration.  I would
like to obtain a copy of that tape recording.  (Side note: if that
same location is a source for pictures/other audio from the rest of
project, that's even better, but mainly looking for the descent audio)