I do know that Lead Belly's widow and neice never found an accordian, windjammer, concertina, whatever, among his personal items after his death. He did have a publicity shot with some sort of squeeze box.

Besides those pieces metioned before, thereis an teresting song I have heard on concertina, most likely. It is on Smithsonian/Folkways 40044 titled "Lead Belly where did you sleep last night". the song is a short one called Sukey Jump