Chris,
This posting actually made me chuckle. The idea of a period one man band is quite odd but believable. It definitely would be a great impression that is truly unique. It sounds to me like you have done quite a bit of research on your own on this subject and probably know more than most of us on it. I would also recommend contacting George Wunderlich as he has done quite a bit of research on minstrel music as well. Perhaps he has some leads on some of the items you have asked about. One thing that intrigues me about your research is the kitchen bellows?? How in the heck would you play the kitchen bellows? The only thing I can think of is that it might produce a sound like a jug. That is definitely strange. It is even stranger that he mastered it! But, interesting post none the less. I will also dig through my files and see what I can find for you.

Rick Musselman
Allendale Melodians