Is there any information -- text, drawing, photo, etc. -- of the banjo Joel Sweeney used during his days as a traveling minstrel in the U.S. and British Isles? I've seen photos of the left-hander he made for his niece and played a Hartel replica this weekend, but have not been able to uncover any other information on other banjos he (or brother Sam) made/used.
Also, was the banjo he made for his niece a one-off or did he produce others (as I understand it collaboration with William Boucher)?
Thanks in advance for your help.