I don't know if
anyone else has mentioned it, but there was a recording
of Jack Johnson
issued in the UK in about 1914 on Edison Bell Winner
2685 of a monologue on
'Physical Culture'. I have no idea of the
matrices or the source of the
recording, because the record is extremely
rare and I have heard of only 1
copy - which is supposedly in Scotland!
I have been told that his voice
is rather indistinct on the recording.