Lizard,
Davis made many of the Minnesota machines. When you get the pics posted there are several members here that will be able to tell you who made it.
This is my Minnesota Model B, it was made by Davis:
[ATTACH=CONFIG]466106[/ATTACH]
She used to be a treadle machine, but was retro fitted with a motor eons ago. The base it's on is an old home made one.
Joe