This is very interesting. It's a 1931 silent documentary film about Chicago. At one point, the film crew visited Maxwell Street, and caught a couple of musicians on camera. The most interesting of these is a man playing guitar and quills from about 56.30 to 56.40 (as part of a medicine show sequence), which has everybody speculating.
Film at:
https://www.arte.tv/de/videos/090556-000-A/weltstadt-in-flegeljahren-ein-bericht-ueber-chicago/?fbclid=IwAR24FFRdC4GOFAWdXJ0bL29YY9JnNXy3yVlD-d2k9xQwZKuSK_Ikgq-OcBk
Facebook topic at:
https://www.facebook.com/groups/163835903692878/permalink/4068736856536077/
Film at:
https://www.arte.tv/de/videos/090556-000-A/weltstadt-in-flegeljahren-ein-bericht-ueber-chicago/?fbclid=IwAR24FFRdC4GOFAWdXJ0bL29YY9JnNXy3yVlD-d2k9xQwZKuSK_Ikgq-OcBk
Facebook topic at:
https://www.facebook.com/groups/163835903692878/permalink/4068736856536077/